introspection of required arguments for command tasks

[rkoschmitzky]

Goal

Allow inspection of required arguments for command tasks. This information can be listed via jobtronaut info command.

Motivation

Picking up a command task to reuse in another task dependency often leads to the situation, that I need to know what arguments this task expects. Currently you can only figure this out by jumping to the source of the code and manually check or simply try and error.

[rkoschmitzky]

@Fridi-K