Refactor Supabase setup file

Refactor src/lib/supabase/setup.ts into smaller files for better maintainability and readability.

src/lib/supabase/index.ts

@@ -1,9 +1,12 @@
 
 import { supabase, isValidUrl } from './client';
 import { testSupabaseConnection } from './tests';
+import { createRequiredTables, checkTablesStatus } from './setup';
 
 export {
   supabase,
   isValidUrl,
-  testSupabaseConnection
+  testSupabaseConnection,
+  createRequiredTables,
+  checkTablesStatus
 };