Add meow command

[wingyplus]

Is your feature request related to a problem? Please describe. I'm a user from Jenkins-X, which extends chatops command from Prow. The command I like is meow. I have a proposal to add it as a command. ><)

This is just nice to have. If you think it's a waste. Feel free to close the issue. Otherwise, I can find the time to implement it.

[jpmcb]

Yes.

/priority high