Add capability to rotate own API key

[sgnn7]

Is your feature request related to a problem? Please describe.

Due to the server-side change to not allow changing of the current user's API key via token, our use of RotateAPIKeyRequest will fail when the target roleID is the current user. This story tracks the addition back of that capability via an API call but using username/api_key instead of the old username/api_token auth.

Describe the solution you would like

AC:

• There is a publicly usable function in this API to rotate the current user's API key

Describe alternatives you have considered

It's possible that we may be able to use the same current API method for this but have it pass in the API key when using this specific target endpoint.

Additional context

Connected to: #78