Refactor registration and dashboard features to support invite codes and Bunny uploads

- Moved registration logic to a new client component for better separation of concerns.
- Integrated invite code requirement based on feature flags in the registration process.
- Enhanced dashboard functionality to conditionally enable Bunny uploads based on feature flags.
- Updated various components and API routes to check for Bunny uploads and Stripe billing feature flags.
- Added new feature flag utilities for managing feature toggles in the application.

components/video-page/types.ts

@@ -184,6 +184,7 @@ export interface CommentActionsConfig {
 export interface VersionActionsConfig {
   projectId?: string;
   videoId: string;
+  bunnyUploadsEnabled?: boolean;
 }
 
 export interface VideoPageHeaderActions {