feat: implement admin blocks management feature

- Added AdminBlocksManagement component for managing court blocks.
- Implemented functionality to create, edit, and delete blocks.
- Integrated fetching of courts and blocks from the API.
- Added validation for block creation and editing forms.
- Enhanced UI with responsive design for mobile and desktop views.
- Created database migration for court_blocks table and updated users table with theme_preference.

lib/db/migrations/meta/_journal.json

@@ -15,6 +15,13 @@
       "when": 1758824962110,
       "tag": "0001_slimy_starjammers",
       "breakpoints": true
+    },
+    {
+      "idx": 2,
+      "version": "5",
+      "when": 1766916904651,
+      "tag": "0002_thick_makkari",
+      "breakpoints": true
     }
   ]
 }