feat: add settings and reports pages

- Add settings page with organization, sites, courts, and users tabs
- Add reports page with revenue charts and statistics
- Add users API endpoint
- Add sites/[id] API endpoint for CRUD operations
- Add tabs UI component
- Fix sites API to return isActive field

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

turbo.json

@@ -1,7 +1,7 @@
 {
   "$schema": "https://turbo.build/schema.json",
   "globalDependencies": ["**/.env.*local"],
-  "pipeline": {
+  "tasks": {
     "build": {
       "dependsOn": ["^build"],
       "outputs": [".next/**", "!.next/cache/**", "dist/**"]