CLI: Add -h option as an alias for --help

[danielhollas]

A companion to the same PR at the aiidalab package.

aiidalab/aiidalab#369

[codecov]

Codecov Report

Patch coverage: 100.00% and no project coverage change.

Comparison is base (d77d438) 86.54% compared to head (4c82957) 86.54%.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #171   +/-   ##
=======================================
  Coverage   86.54%   86.54%           
=======================================
  Files           9        9           
  Lines         907      907           
=======================================
  Hits          785      785           
  Misses        122      122           

Flag	Coverage Δ
py-3.10	86.43% <100.00%> (ø)
py-3.8	86.39% <100.00%> (ø)
py-3.9	86.50% <100.00%> (ø)

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Impacted Files	Coverage Δ
aiidalab_launch/__main__.py	80.12% <100.00%> (ø)

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[danielhollas]

@unkcpz can you take a look?

Next week I'd like to pick up #105, to finally pin down and solve #163.

[unkcpz]

ha, I forgot this. All good, thanks! @danielhollas