Add PR template, ESLint GH Action

Author: juecd

.github/pull_request_template.md

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+## Description
+
+Please provide an explanation of the changes you've made:
+
+<!-- Describe what this PR does and why -->
+
+## Implementation Checklist
+
+- [ ] Implemented this change in **TypeScript**
+- [ ] Implemented this change in **Python**
+
+## Testing
+
+- [ ] All tests pass locally
+- [ ] Linted
+- [ ] Added tests for new functionality (if applicable)
+
+## Visual Proof
+
+Please provide a screenshot or video demonstrating that your changes work locally:
+
+<!-- Drag and drop your screenshot/video here or use the following format: -->
+<!-- ![Screenshot description](image-url) -->
+
+## Related Issue
+
+Fixes [Github issue link]
+
+<!-- Replace with actual issue link, e.g., Fixes https://github.com/username/repo/issues/123 -->
+
+## Additional Notes
+
+<!-- Any additional context, concerns, or notes for reviewers -->

.github/workflows/eslint.yml

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+name: ESLint
+
+on:
+  push:
+    branches: [ main ]
+  pull_request:
+    branches: [ main ]
+
+jobs:
+  eslint:
+    runs-on: ubuntu-latest
+    
+    steps:
+    - name: Checkout code
+      uses: actions/checkout@v4
+      
+    - name: Setup Bun
+      uses: oven-sh/setup-bun@v1
+      with:
+        bun-version: latest
+        
+    - name: Install dependencies
+      run: bun install --frozen-lockfile
+      
+    - name: Run ESLint
+      run: bun run lint
+      
+    - name: Annotate ESLint results
+      uses: ataylorme/eslint-annotate-action@v2
+      if: failure()
+      with:
+        repo-token: "${{ secrets.GITHUB_TOKEN }}"
+        report-json: "eslint-report.json"