Add a /version endpoint

[fschoell]

It would be good to have a /version endpoint that exposes the API's deployed version (if tagged, otherwise something static like dev) and the commit hash. That makes it easy to see what version is deployed when visiting the API. See this endpoint on the Pinax Accout API for example: https://api.account.pinax.network/swagger/index.html#/version/get_version

[0237h]

Thanks for the feature request !

I agree, should be useful to have an endpoint for this. I actually implemented it for the logging already in #10. Just need to add tags potentially as well.

I will look into it 👍🏻