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

scripts/configure-r2-cors.ts

@@ -0,0 +1,20 @@
+import 'dotenv/config';
+import { ensureR2UploadCors, R2_BUCKET_NAME, r2Client } from '@/lib/r2';
+import { logError } from '@/lib/logger';
+
+async function main() {
+  const origins = await ensureR2UploadCors();
+  console.log(`Configured upload CORS on bucket "${R2_BUCKET_NAME}" for origins:`);
+  for (const origin of origins) {
+    console.log(`  - ${origin}`);
+  }
+}
+
+main()
+  .catch((error) => {
+    logError('Failed to configure R2 upload CORS:', error);
+    process.exitCode = 1;
+  })
+  .finally(() => {
+    r2Client.destroy();
+  });