[Features] show Addon Status in more details #624

Status of CRs in Addons is crutial to manage clusters. But considering the long list of crs, version of crs, and status of them, it is hard for one to grasp everything.

Maybe kbcli can pave the way by enchricing the describe command or provide a status subommand.
E.g.

kbcli addon describe mysql   

show

1. all CRs this addon has, including CD/CMPD/CMPV, PD/PCR,BPT/ActionSet
2. and their associated status, including
   1. CR status if any
   2. generation, observerGeneration v.s. generation
   3. associated events if any
   4. version of each CR
   5. etc.