feat(licenses): implement license management and validation features

- Added a new licenses application to handle license key management.
- Implemented API endpoints for validating license keys and managing paid features.
- Introduced a new component for enabling paid features in the dashboard.
- Updated database schema to include a licenseKey field for users.
- Refactored server API to remove the admin router and integrate license validation into user operations.
- Enhanced the monitoring setup process to require valid license keys.
- Updated pnpm workspace configuration to include the new licenses app.

apps/licenses/.gitignore

@@ -0,0 +1,28 @@
+# dev
+.yarn/
+!.yarn/releases
+.vscode/*
+!.vscode/launch.json
+!.vscode/*.code-snippets
+.idea/workspace.xml
+.idea/usage.statistics.xml
+.idea/shelf
+
+# deps
+node_modules/
+
+# env
+.env
+.env.production
+
+# logs
+logs/
+*.log
+npm-debug.log*
+yarn-debug.log*
+yarn-error.log*
+pnpm-debug.log*
+lerna-debug.log*
+
+# misc
+.DS_Store