feat: Migrate ESLint to flat config and resolve initial linting errors

Migrated the ESLint configuration to the new flat config format ()
and addressed several initial linting errors.

Key changes include:
- Updated ESLint configuration to treat  as warnings instead of errors.
- Fixed  errors in  by declaring  and .
- Corrected  error in  by using  instead of an out-of-scope .
- Resolved  error in  by replacing the undefined  directive with the  component.
- Addressed  errors in  by replacing  with  and  with .
- Fixed  errors in  by importing necessary modules (, , ) and adding missing props (, , , , ).

vite.config.ts

@@ -1,10 +1,10 @@
 import { defineConfig } from 'vite';
 import { sveltekit } from '@sveltejs/kit/vite';
-import tailwindcss from "@tailwindcss/vite";
+import tailwindcss from '@tailwindcss/vite';
 
 export default defineConfig({
 	plugins: [
 		tailwindcss(),
-		sveltekit(), // <-- Must come after Tailwind
-	],
-});
+		sveltekit() // <-- Must come after Tailwind
+	]
+});