docs: add devloper section readme and register the db migration checklist

Author: wmontwe

docs/SUMMARY.md

@@ -45,6 +45,8 @@ generator, in this case, **mdbook**. It defines the structure and navigation of
   - [Troubleshooting]()
     - [Collecting Debug Logs](user-guide/troubleshooting/collecting-debug-logs.md)
     - [Find your app version](user-guide/troubleshooting/find-your-app-version.md)
+- [Developer](developer/README.md)
+  - [Database Migration Checklist](developer/db-migration-checklist.md)
 - [Release]()
   - [Release Process](release/RELEASE.md)
   - [Release Automation](release/AUTOMATION.md)

docs/developer/README.md

@@ -0,0 +1,12 @@
+# Developer Documentation
+
+Developer focused documentation for contributing to the codebase. It's dedicated to providing essential guides,
+checklists, and architectural notes to help you navigate the codebase and contribute safely.
+
+## Checklists
+
+Detailed checklists to ensure best practices and consistency across the codebase:
+
+- **[Database Migration Checklist](./db-migration-checklist.md)**
+  A mandatory checklist for creating and reviewing database migrations to ensure they are safe, performant, and correct.
+