Serve user avatar images to the front-end

[davidyell]

Is your feature request related to a problem? Please describe.
When loading the user data, it should be possible for the api to return the users avatar image

Describe the solution you'd like
Could either expose the public folder via the web server to serve the image directly
Might be possible to base64 encode the image and return it as a string in the api response, so the front-end React app could just render it.

Describe alternatives you've considered
Unsure on how to approach this problem, so might require investigation.