Define API used/need to be implemented in the daemon

[gbraad]

The code describes the use of the following two paths:

https://github.com/code-ready/routes-controller/blob/6effc2f0304d3a11c1e22c278b10630e834d0220/main.go#L91
https://github.com/code-ready/routes-controller/blob/6effc2f0304d3a11c1e22c278b10630e834d0220/main.go#L100

but this is not described or documented.

[gbraad]

From daemon to admin-helper

• https://github.com/code-ready/crc/pull/1793/files#diff-6a402f241a359c13dc3183a088f87a7f0a331df8350209c3d674f40f7119cef1R152 =>
  https://github.com/code-ready/admin-helper/blob/master/cmd/add.go
• https://github.com/code-ready/crc/pull/1793/files#diff-6a402f241a359c13dc3183a088f87a7f0a331df8350209c3d674f40f7119cef1R168 =>
  https://github.com/code-ready/admin-helper/blob/master/cmd/remove.go