docs: add initial README.md, workflow

.github/workflows/README.md

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+# Automatic tests
+
+After completing all the steps in the project, automatic tests will become available to you. Tests are run on each commit - once all tasks in the Hexlet interface are completed, make a commit, and the tests will run automatically.
+
+The hexlet-check.yml file is responsible for running these tests - do not delete this file, edit it, or rename the repository.

.github/workflows/hexlet-check.yml

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+##########################################################################
+#                    DO NOT DELETE OR EDIT THIS FILE                     #
+#     This file is automatically generated and used to run tests         #
+##########################################################################
+
+name: hexlet-check
+
+on:
+  push:
+    branches:
+      - '**'
+    tags:
+      - '**'
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Hexlet project check
+        uses: hexlet/project-action@release
+        with:
+          hexlet-id: ${{ secrets.HEXLET_ID }}

README.md

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+### Hexlet tests and linter status:
+[![Actions Status](https://github.com/sazanik/frontend-project-46/actions/workflows/hexlet-check.yml/badge.svg)](https://github.com/sazanik/frontend-project-46/actions)