Configuring content editing permissions per user

[xyntechx]

Hi! TinaCMS looks like an amazing tool to help complete one of my personal projects. For that particular project however, I would like my users to be able to only edit content that they own (in other words, they cannot edit all content, just the ones that they created themselves). Is it possible for us to configure this type of permission with Tina, perhaps by matching the username with a corresponding metadata in the MDX files?