Make collab quieter on startup (#8685)

Fix initialization of minio to happen on service start instead of
bootstrap,
don't log errors if extensions are empty or if clickhouse is disabled

Release Notes:

- N/A

Procfile

@@ -1,3 +1,3 @@
 collab: RUST_LOG=${RUST_LOG:-warn,tower_http=info,collab=info} cargo run --package=collab serve
 livekit: livekit-server --dev
-blob_store: MINIO_ROOT_USER=the-blob-store-access-key MINIO_ROOT_PASSWORD=the-blob-store-secret-key minio server .blob_store
+blob_store: ./script/run-local-minio