Add consistency for CLI commands

[burdiyan]

I think ks CLI lacks some consistency regarding command names. Especially the ones for deleting things:

ks pkg remove
ks component rm
ks param delete

It would be great if the UI would be consistent with this kind of things. Otherwise you can never build a mental model around it, IMO.

I like that ks took approach more similar to docker rather than kubectl (I mean that actions are grouped by resource, like ks param <action> instead of kubectl delete <thing>). But if there's no consistency, you either check help all the time, or constantly dealing with errors.

[burdiyan]

I would suggest the following rules:

1. ks <command> [<subcommand>] [<action>].
2. Default actions are create, ls, rm.
3. If action is not specified and ls is available, use it by default. Like ks component would list components instead of failing.
4. Gradually deprecate the commands not following the rules.