feature：support for playbook source type

[0ekk]

1 Code requirement

2 observe opensource license

3 sign-off your commit

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

After I edited or added a playbook in repo and then compiled & deployed kubean-operator, I want to edit or add the playbook before apply a ClusterOperation, but I don't want to start over.

So if playbook could be loaded by configmap, that might help a lot.

5 Describe the solution you'd like

Proposal
Each action could be owned a property called source. It has two alternative values now:
1. builtin
2. configmap

7 Additional context

6 Describe alternatives you've considered

[wenting-guo]

/kind feature