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)/workspaces/[workspaceId]/page.tsx

@@ -17,6 +17,7 @@ import { Badge } from '@/components/ui/badge';
 import { auth, checkWorkspaceAccess } from '@/lib/auth';
 import { db } from '@/lib/db';
 import { VideoDragDropUploader } from '@/components/video-drag-drop-uploader';
+import { isDirectFileUploadEnabled, isS3VideoUploadsEnabled } from '@/lib/feature-flags';
 
 function VisibilityIcon({ visibility }: { visibility: string }) {
   switch (visibility) {
@@ -108,7 +109,8 @@ export default async function WorkspacePage({ params, searchParams }: WorkspaceP
     <div className="px-6 lg:px-8 py-8 w-full">
       <VideoDragDropUploader
         workspaceId={workspaceId}
-        canUpload={isAdmin && workspace._count.projects > 0}
+        canUpload={isAdmin && workspace._count.projects > 0 && isDirectFileUploadEnabled()}
+        directUploadProvider={isS3VideoUploadsEnabled() ? 'r2' : 'bunny'}
       />
       {/* Back & Header */}
       <div className="mb-6">