add initial charm skeleton (#1)

* add initial charm skeleton

.github/ISSUE_TEMPLATE/bug_report.yml

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+name: Bug Report
+description: File a bug report
+labels: ["Type: Bug", "Status: Triage"]
+body:
+  - type: markdown
+    attributes:
+      value: >
+        Thanks for taking the time to fill out this bug report! Before submitting your issue, please make
+        sure you are using the latest version of the charm. If not, please try upgrading to the latest edge release prior to 
+        posting your report to make sure it's not already solved.
+  - type: textarea
+    id: bug-description
+    attributes:
+      label: Bug Description
+      description: >
+        If applicable, add screenshots to 
+        help explain the problem you are facing.      
+    validations:
+      required: true
+  - type: textarea
+    id: reproduction
+    attributes:
+      label: To Reproduce
+      description: >
+        Please provide the output of `juju export-bundle` and step-by-step instructions for how to reproduce the behavior.
+        A deployment diagram could be handy too. See https://discourse.charmhub.io/t/9269 for examples.
+      placeholder: |
+        1. `juju deploy ...`
+        2. `juju relate ...`
+        3. `juju status --relations`
+    validations:
+      required: true
+  - type: textarea
+    id: environment
+    attributes:
+      label: Environment
+      description: >
+        We need to know a bit more about the context in which you run the charm.
+        - Are you running Juju locally, on lxd, in multipass or on some other platform?
+        - What track and channel you deployed the charm from (ie. `latest/edge` or similar).
+        - Version of any applicable components, like the juju snap, the model controller, lxd, microk8s, and/or multipass.
+    validations:
+      required: true
+  - type: textarea
+    id: logs
+    attributes:
+      label: Relevant log output
+      description: >
+        Please copy and paste any relevant log output. This will be automatically formatted into code, so no need for backticks.
+        Fetch the logs using `juju debug-log --replay` and `kubectl logs ...`. Additional details available in the juju docs 
+        at https://juju.is/docs/olm/juju-logs
+      render: shell
+    validations:
+      required: true
+  - type: textarea
+    id: additional-context
+    attributes:
+      label: Additional context

.github/ISSUE_TEMPLATE/enhancement_proposal.yml

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+name: Enhancement Proposal
+description: File an enhancement proposal
+labels: ["Type: Enhancement", "Status: Triage"]
+body:
+  - type: markdown
+    attributes:
+      value: >
+        Thanks for taking the time to fill out this enhancement proposal! Before submitting your issue, please make
+        sure there isn't already a prior issue concerning this. If there is, please join that discussion instead.
+  - type: textarea
+    id: enhancement-proposal
+    attributes:
+      label: Enhancement Proposal
+      description: >
+        Describe the enhancement you would like to see in as much detail as needed.      
+    validations:
+      required: true

.github/pull_request_template.md

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+## Issue
+<!-- What issue is this PR trying to solve? -->
+
+
+## Solution
+<!-- A summary of the solution addressing the above issue -->
+
+
+## Context
+<!-- What is some specialized knowledge relevant to this project/technology -->
+
+
+## Testing Instructions
+<!-- What steps need to be taken to test this PR? -->
+
+
+## Upgrade Notes
+<!-- To upgrade from an older revision of charmed prometheus, ... -->

.github/workflows/issues.yaml

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+name: Issues
+
+on: [issues]
+
+jobs:
+  update:
+    name: Update Issue
+    uses: canonical/observability/.github/workflows/issues.yaml@main
+    secrets: inherit
+    with:
+      component: istio

.github/workflows/promote.yaml

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+name: Promote Charm
+
+on:
+  workflow_dispatch:
+    inputs:
+      promotion:
+        type: choice
+        description: Channel to promote from
+        options:
+          - edge -> beta
+          - beta -> candidate
+          - candidate -> stable
+
+jobs:
+  promote:
+    name: Promote
+    uses: canonical/observability/.github/workflows/charm-promote.yaml@main
+    with:
+      promotion: ${{ github.event.inputs.promotion }}
+    secrets: inherit

.github/workflows/pull-request.yaml

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+name: Pull Requests
+
+on:
+  pull_request:
+    branches:
+      - main
+
+jobs:
+  pull-request:
+    name: PR
+    uses: canonical/observability/.github/workflows/charm-pull-request.yaml@main
+    secrets: inherit

.github/workflows/release.yaml

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+name: Release Charm to Edge and Publish Libraries
+
+on:
+  workflow_dispatch: {}
+  push:
+    branches:
+      - main
+
+jobs:
+  release:
+    uses: canonical/observability/.github/workflows/charm-release.yaml@main
+    secrets: inherit
+    with:
+      build-for-arm: true

.github/workflows/update-libs.yaml

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+name: Auto-update Charm Libraries
+on:
+  # Manual trigger
+  workflow_dispatch:
+  # Check regularly the upstream every four hours
+  schedule:
+    - cron: "0 0,4,8,12,16,20 * * *"
+
+jobs:
+  update-lib:
+    name: Check libraries
+    uses: canonical/observability/.github/workflows/charm-update-libs.yaml@main
+    secrets: inherit
+

.gitignore

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+venv/
+build/
+*.charm
+.coverage
+__pycache__/
+*.py[cod]
+.tox
+.idea/
+tests/integration/*-tester/lib/
+.env
+.vscode/

CONTRIBUTING.md

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+# Contributing
+![GitHub License](https://img.shields.io/github/license/canonical/istio-core-operator)
+![GitHub Commit Activity](https://img.shields.io/github/commit-activity/y/canonical/istio-core-operator)
+![GitHub Lines of Code](https://img.shields.io/tokei/lines/github/canonical/istio-core-operator)
+![GitHub Issues](https://img.shields.io/github/issues/canonical/istio-core-operator)
+![GitHub PRs](https://img.shields.io/github/issues-pr/canonical/istio-core-operator)
+![GitHub Contributors](https://img.shields.io/github/contributors/canonical/istio-core-operator)
+![GitHub Watchers](https://img.shields.io/github/watchers/canonical/istio-core-operator?style=social)
+
+## Development environment
+
+To make contributions to this charm, you'll need a working [development setup](https://juju.is/docs/sdk/dev-setup).
+
+You can create an environment for development with `tox`:
+
+```shell
+tox devenv -e integration
+source venv/bin/activate
+```
+
+## Testing
+
+This project uses `tox` for managing test environments. There are some pre-configured environments
+that can be used for linting and formatting code when you're preparing contributions to the charm:
+
+```shell
+tox run -e format        # update your code according to linting rules
+tox run -e lint          # code style
+tox run -e static        # static type checking
+tox run -e unit          # unit tests
+tox run -e scenario      # scenario tests
+tox run -e integration   # integration tests
+tox                      # runs 'format', 'lint', 'static', 'unit', 'scenario', and 'integration' environments
+```
+
+## Build the charm
+
+Build the charm in this git repository using:
+
+```shell
+charmcraft pack
+```