Added index-arg to the cfengine add/search/info command & fixed a faulty call to cfengine add

[SimonThalvorsen]

Ticket: None
Changelog: Title

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 55.16%. Comparing base (4ee9538) to head (6bd4feb).

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #245      +/-   ##
==========================================
+ Coverage   54.73%   55.16%   +0.42%     
==========================================
  Files          33       33              
  Lines        4149     4164      +15     
==========================================
+ Hits         2271     2297      +26     
+ Misses       1878     1867      -11     

Files with missing lines	Coverage Δ
src/cfengine_cli/cfengine_wrapper/arg_parse.py	100.00% <100.00%> (ø)
...cfengine_cli/cfengine_wrapper/cfengine_commands.py	29.94% <100.00%> (+6.01%)	⬆️
src/cfengine_cli/main.py	61.01% <100.00%> (+2.71%)	⬆️

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