refs https://github.com/TryGhost/Toolbox/issues/292
- Allows to detect and extract admin api key ID value. The reason why we are not dealing withe the "secret" value here in a similar way as Content API key is to keep the package independent from the model layer. It only provides "identification" information along with the key type so that the version mismatch data service can deal with this information in an optimal way (just one db query).
refs https://github.com/TryGhost/Toolbox/issues/292
- The package is meant to be one stop shop for extraction of any API keys from requests known to Ghost
- To start with it should detect and return keys for Content and Admin APIs for the purposes of api version mismatch handling
