curl --request POST \
  --url https://api.mudstack.com/workspaces/libraries \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: multipart/form-data' \
  --header 'x-account-id: <x-account-id>' \
  --header 'x-workspace-id: <x-workspace-id>' \
  --form 'name=New Library' \
  --form 'description=<string>'

{
  "id": "<string>",
  "workspace_id": "<string>",
  "name": "<string>",
  "description": "<string>",
  "thumbnail_file_id": "<string>",
  "defaultAvatar": 123,
  "created_by_user_id": "<string>",
  "sequence": 123
}