Nested CLI-Arguments

This MR introduces nested CLI-Arguments to miniflask.

Description

Setting a list of variables for a single module can become cumbersome.

Previously / Example:

python do.py --repo.modulegroup.module.var1 42 --repo.modulegroup.module.var2 43 --repo.modulegroup.module.var3 43 --repo.modulegroup.module.var4 42 --repo.modulegroup.module.var5 42

Fuzzy-arguments improve this user experience

python do.py --module.var1 42 --module.var2 43 --module.var3 43 --module.var4 42 --module.var5 42

However, the module name (module in this case) has to be written for every single variable (if the variable name may not be unique).

New Behavior:
With this MR, it is possible to instead specify variables in a nested fashion:

python do.py --module [ --var1 42 --var2 42 --var3 42 --var4 42 --var5 42 ]

Even nested expressions are possible,

python do.py --modulegroup [ --module [ --var1 42 --var2 42 ] --othermodule [ --var1 42 --var2 42 ] ]

Things done in this MR

• Included nested arguments parsing into mf.parse_args

Check all before creating this PR:

• Documentation adapted
• unit tests adapted / created