feat: enhance API route naming conventions and structure

- Added comprehensive guidelines for API route naming and structure in `ROUTE_NAMING_BEST_PRACTICES.md`.
- Updated `ARCHITECHTURE.md` to reference the new best practices document.
- Refactored course-related routes to follow new naming conventions, including changes to endpoint paths and validation schemas.
- Removed the deprecated course clone route and integrated cloning functionality directly into the course routes.
- Adjusted various API methods to ensure consistent usage of HTTP methods and parameter structures across the application.

apps/dashboard/src/lib/features/auth/api/profile.svelte.ts

@@ -88,8 +88,8 @@ export class ProfileApi extends BaseApiWithErrors {
       return;
     }
 
-    await this.execute<typeof classroomio.account.user.$put>({
-      requestFn: () => classroomio.account.user.$put({ json: profileUpdates }),
+    await this.execute<typeof classroomio.account.profile.$put>({
+      requestFn: () => classroomio.account.profile.$put({ json: profileUpdates }),
       logContext: 'updating profile',
       onSuccess: (response) => {
         profileStore.update((_profile) => ({