feat: Add comprehensive license and repository protection

- Add MIT LICENSE file with proper copyright attribution
- Add SECURITY.md with vulnerability reporting guidelines
- Add CONTRIBUTING.md with contribution guidelines and standards
- Add CODE_OF_CONDUCT.md following Contributor Covenant 2.1
- Add .github/CODEOWNERS for code ownership protection
- Add GitHub issue templates (bug report, feature request)
- Add pull request template for standardized PRs
- Add automated workflows for code quality and security checks
- Add dependency review workflow for license compliance

This establishes professional standards and protections for the repository.

.github/workflows/dependency-review.yml

@@ -0,0 +1,25 @@
+name: Dependency Review
+
+on:
+  pull_request:
+    branches: [ main, develop ]
+
+permissions:
+  contents: read
+  pull-requests: write
+
+jobs:
+  dependency-review:
+    name: Review Dependencies
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Checkout code
+      uses: actions/checkout@v4
+
+    - name: Dependency Review
+      uses: actions/dependency-review-action@v4
+      with:
+        fail-on-severity: moderate
+        deny-licenses: GPL-2.0, GPL-3.0, AGPL-3.0
+        comment-summary-in-pr: always