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/0002_thick_makkari.sql

@@ -0,0 +1,14 @@
+CREATE TABLE `court_blocks` (
+	`id` text PRIMARY KEY NOT NULL,
+	`court_id` text,
+	`date` text NOT NULL,
+	`start_time` text NOT NULL,
+	`end_time` text NOT NULL,
+	`reason` text NOT NULL,
+	`created_by` text NOT NULL,
+	`created_at` integer NOT NULL,
+	FOREIGN KEY (`court_id`) REFERENCES `courts`(`id`) ON UPDATE no action ON DELETE cascade,
+	FOREIGN KEY (`created_by`) REFERENCES `users`(`id`) ON UPDATE no action ON DELETE cascade
+);
+--> statement-breakpoint
+ALTER TABLE users ADD `theme_preference` text DEFAULT 'system' NOT NULL;