feat: enable S3 video uploads and update related configurations

- Added support for self-hosted S3 video uploads with new environment variables: OPENFRAME_ENABLE_S3_VIDEO_UPLOADS and OPENFRAME_MAX_VIDEO_UPLOAD_BYTES.
- Updated .env.example and .env.docker.example to reflect new configuration options.
- Enhanced Content Security Policy to include origins for S3-compatible storage.
- Updated dependencies for AWS SDK to support new features.
- Refactored upload logic to accommodate both Bunny and S3 upload providers.
- Updated documentation to clarify the usage of direct uploads and S3 configurations.
- Closes #11

app/(dashboard)/projects/[projectId]/videos/new/page.tsx

@@ -1,5 +1,5 @@
 import { requireProjectAccessOrRedirect } from '@/lib/route-access';
-import { isBunnyUploadsEnabled } from '@/lib/feature-flags';
+import { isDirectFileUploadEnabled, isS3VideoUploadsEnabled } from '@/lib/feature-flags';
 import NewVideoPageClient from './new-video-page-client';
 
 interface NewVideoPageProps {
@@ -14,5 +14,11 @@ export default async function NewVideoPage({ params }: NewVideoPageProps) {
     intent: 'manage',
   });
 
-  return <NewVideoPageClient projectId={projectId} bunnyUploadsEnabled={isBunnyUploadsEnabled()} />;
+  return (
+    <NewVideoPageClient
+      projectId={projectId}
+      directUploadsEnabled={isDirectFileUploadEnabled()}
+      directUploadProvider={isS3VideoUploadsEnabled() ? 'r2' : 'bunny'}
+    />
+  );
 }