added cprint wrapper for cmd submodule

[mmaelicke]

finally close #4

• [x] re-run CLI docs

• [ ] check coverage

[codecov[bot]]

Codecov Report

Merging #102 into master will decrease coverage by 0.12%. The diff coverage is 47.29%.

@@            Coverage Diff             @@
##           master     #102      +/-   ##
==========================================
- Coverage   57.04%   56.91%   -0.13%     
==========================================
  Files          54       54              
  Lines        2335     2370      +35     
==========================================
+ Hits         1332     1349      +17     
- Misses       1003     1021      +18     

Flag	Coverage Δ
#e2e	56.91% <47.29%> (-0.13%)	:arrow_down:

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
metacatalog/cmd/add.py	11.42% <8.33%> (-2.86%)	:arrow_down:
metacatalog/cmd/show.py	19.35% <16.66%> (ø)
metacatalog/cmd/catalog.py	27.77% <20.00%> (ø)
metacatalog/cmd/connection.py	23.07% <20.00%> (+6.41%)	:arrow_up:
metacatalog/cmd/create.py	42.85% <50.00%> (ø)
metacatalog/cmd/migration.py	25.92% <50.00%> (ø)
metacatalog/command_line.py	88.88% <61.53%> (-7.73%)	:arrow_down:
metacatalog/cmd/_util.py	72.00% <71.42%> (-3.00%)	:arrow_down:
metacatalog/cmd/find.py	50.98% <73.33%> (-1.02%)	:arrow_down:
... and 4 more

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