Add bug and feature request templates

.github/ISSUE_TEMPLATE/1-bug_report.yml

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+name: Bug report
+description: Create a bug report for something that is not working as expected
+title: "Bug: "
+labels:
+  - bug
+  - needs-triage
+assignees:
+  - klejejs
+
+body:
+  - type: textarea
+    id: issue
+    validations:
+      required: true
+    attributes:
+      label: Issue
+      description: A clear and concise description of what the bug is.
+
+  - type: textarea
+    id: expected_behavior
+    validations:
+      required: true
+    attributes:
+      label: Expected Behavior
+      description: A clear and concise description of what you expected to happen.
+
+  - type: textarea
+    id: debug_file_data
+    validations:
+      required: true
+    attributes:
+      label: Debug File Data
+      description: Please attach Thermia debug file data that can help diagnose the issue. To get the debug file data, see [README.md](https://github.com/klejejs/ha-thermia-heat-pump-integration?tab=readme-ov-file#adding-support-for-new-heat-pump-models).
+
+  - type: checkboxes
+    id: latest_version
+    attributes:
+      label: Are you running the latest version?
+      description: Please check if you are running the latest version of the integration before submitting a bug report.
+      options:
+        - label: I have checked and am running the latest version of the integration
+          required: true
+
+  - type: textarea
+    id: additional_context
+    attributes:
+      label: Additional Context
+      description: Add any other context about the problem here.
+      placeholder: Add additional context here

.github/ISSUE_TEMPLATE/2-feature_request.yml

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+name: Feature request
+description: Suggest a new feature or improvement
+title: "Feature: "
+labels:
+  - enhancement
+  - needs-triage
+assignees:
+  - klejejs
+
+body:
+  - type: textarea
+    id: problem
+    validations:
+      required: true
+    attributes:
+      label: Problem
+      description: A clear and concise description of what the problem is.
+
+  - type: textarea
+    id: solution
+    validations:
+      required: true
+    attributes:
+      label: Solution
+      description: A clear and concise description of what you want to happen.
+
+  - type: textarea
+    id: alternatives
+    validations:
+      required: true
+    attributes:
+      label: Alternatives
+      description: A clear and concise description of any alternative solutions or features you've considered.
+
+  - type: textarea
+    id: debug_file_data
+    validations:
+      required: true
+    attributes:
+      label: Debug File Data
+      description: Please attach Thermia debug file data that can help diagnose the issue. To get the debug file data, see [README.md](https://github.com/klejejs/ha-thermia-heat-pump-integration?tab=readme-ov-file#adding-support-for-new-heat-pump-models).
+
+  - type: checkboxes
+    id: latest_version
+    attributes:
+      label: Are you running the latest version?
+      description: Please check if you are running the latest version of the integration before submitting a bug report.
+      options:
+        - label: I have checked and am running the latest version of the integration
+          required: true
+
+  - type: textarea
+    id: additional_context
+    attributes:
+      label: Additional Context
+      description: Add any other context or screenshots about the feature request here.

.github/ISSUE_TEMPLATE/config.yml

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+blank_issues_enabled: false
+contact_links:
+  - name: GitHub Discussions
+    url: https://github.com/klejejs/ha-thermia-heat-pump-integration/discussions
+    about: In case you have any questions or need help with the integration, please use GitHub Discussions.