refactor: reorganize components into domain subfolders and replace relative imports

Move components from flat src/lib/components/ into recipes/, faith/, and
cospend/ subdirectories. Replace ~144 relative imports across API routes
and lib files with $models, $utils, $types, and $lib aliases. Add $types
alias to svelte.config.js. Remove unused EditRecipe.svelte.

src/routes/api/cospend/monthly-expenses/+server.ts

@@ -1,7 +1,7 @@
 import { json } from '@sveltejs/kit';
 import type { RequestHandler } from './$types';
-import { Payment } from '../../../../models/Payment';
-import { dbConnect } from '../../../../utils/db';
+import { Payment } from '$models/Payment';
+import { dbConnect } from '$utils/db';
 
 export const GET: RequestHandler = async ({ url, locals }) => {
   const session = await locals.auth();