[FEATURE] Expose spec and stateful config to the users

[kjczarne]

Is your feature request related to a problem? Please describe.
Power users may want to modify the spec identifiers according to their needs and change e.g. the default logging behavior on a target system.

Describe the solution you'd like
spec.yaml should be allowed to be loaded with kalash configure subommand.
A config.yaml should be added to modify the default behavior of the tool. It should be loaded using kalash configure as well.

Describe alternatives you've considered
Currently modification of these parameters requires users to meddle with the internal configuration in the installed package. No client should technically touch the code.

Additional context
N/A