kctrl: Enhance `--default-values-file-output` for package available get

**Describe the problem/challenge you have**
Currently, when we use `--default-values-file-output`, it prints (and comments) all the properties which have default values available.

**Describe the solution you'd like**
- [ ] Add type and description for all properties (commented)
- [x] If possible, also add properties which don't have a default value available.

**Anything else you would like to add:**
It would be tricky to decide the default values when a default is not set, because using the default of that type might have unintended effects.

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