Good when interacting with users.

Available command

See merge request mpsd-cs/mpsd-software-environments!36

Add new info message (and reduce verbosity of run command)

See merge request mpsd-cs/mpsd-software-environments!34

# Conflicts:
#   mpsd-software-environment.py

refactor create-directory-structure, and create 'clone_repo' function

See merge request mpsd-cs/mpsd-software-environments!35

Rename a few variables and function names for clarity

Closes #8

See merge request mpsd-cs/mpsd-software-environments!40

add CompletedProcess in logging of `run`

See merge request mpsd-cs/mpsd-software-environments!42

- in case of upcoming failure, this provides a clue in which function the
  failure is to find.

- it is only called once
- easier to have the code of the function in the place where it is called now

Motivation:

- the actual command we run is pretty meaningless without context.
- to provide the context, we would need to add additional 'logging.info' command
  BEFORE we call `run`
- if we select loglevel `debug` we get to see the same output as before.