allow passing multiple arguments in test_args

[m-fila]

Passing multiple test_args is a feature in Pkg.test but the action input test_argsadded in #73 allows only a single argument.
Parsing the test_args with julia is added to allow passing multiple args in test_args (as in #73 (comment))

Usage example m-fila/Example.jl#1 and CI check https://github.com/m-fila/Example.jl/pull/1/checks#step:6:61

Closes #47

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 100.00%. Comparing base (53f7ca9) to head (3c62a77).

Additional details and impacted files

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##              main      #118   +/-   ##
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  Coverage   100.00%   100.00%           
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  Files            1         1           
  Lines            2         2           
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  Hits             2         2           

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[mhauru]

Love it! I was just thinking of making a PR like this myself, thanks @m-fila!

I had a couple of small proposals for improvements. Note that I'm just a passer-by, I have no admin rights on the repo.

[m-fila]

@IanButterworth is there anything blocking this? I'm pinging you since you merged the original PR adding test_args #73