Add GitHub community files

- CONTRIBUTING.md with development guidelines
- Issue templates for bugs and feature requests
- Pull request template

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

.github/ISSUE_TEMPLATE/bug_report.md

@@ -0,0 +1,46 @@
+---
+name: Bug Report
+about: Report a bug or unexpected behavior
+title: ''
+labels: bug
+assignees: ''
+---
+
+## Describe the Bug
+
+A clear description of what the bug is.
+
+## Environment
+
+- **Home Assistant version:**
+- **Integration version:**
+- **Immich version:**
+
+## Steps to Reproduce
+
+1.
+2.
+3.
+
+## Expected Behavior
+
+What you expected to happen.
+
+## Actual Behavior
+
+What actually happened.
+
+## Logs
+
+<details>
+<summary>Relevant log entries</summary>
+
+```
+Paste logs here
+```
+
+</details>
+
+## Additional Context
+
+Any other context about the problem.

.github/ISSUE_TEMPLATE/config.yml

@@ -0,0 +1,8 @@
+blank_issues_enabled: true
+contact_links:
+  - name: Home Assistant Community
+    url: https://community.home-assistant.io/
+    about: Ask questions about Home Assistant
+  - name: Immich Documentation
+    url: https://immich.app/docs
+    about: Immich official documentation

.github/ISSUE_TEMPLATE/feature_request.md

@@ -0,0 +1,27 @@
+---
+name: Feature Request
+about: Suggest a new feature or enhancement
+title: ''
+labels: enhancement
+assignees: ''
+---
+
+## Feature Description
+
+A clear description of what you would like to see added.
+
+## Use Case
+
+Describe the problem this feature would solve or the use case it enables.
+
+## Proposed Solution
+
+If you have ideas on how to implement this, describe them here.
+
+## Alternatives Considered
+
+Any alternative solutions or features you've considered.
+
+## Additional Context
+
+Any other context, screenshots, or examples.

.github/PULL_REQUEST_TEMPLATE.md

@@ -0,0 +1,20 @@
+## Description
+
+Brief description of the changes.
+
+## Type of Change
+
+- [ ] Bug fix
+- [ ] New feature
+- [ ] Documentation update
+- [ ] Other (describe):
+
+## Testing
+
+Describe how you tested these changes.
+
+## Checklist
+
+- [ ] Code follows project style guidelines
+- [ ] Changes have been tested locally
+- [ ] Documentation updated (if applicable)