Fix/24 Update package infor functions

[AlexAxthelm]

Some refactoring to get_individual_package_info() to simplify outputs, and reduce dependence on "unofficial" component s of output of pkgload functions.

Closes #24
coincidentally Closes #16

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 97.65%. Comparing base (5b48393) to head (9a9484c).

Additional details and impacted files

@@            Coverage Diff             @@
##             main      #26      +/-   ##
==========================================
+ Coverage   97.59%   97.65%   +0.05%     
==========================================
  Files           7        7              
  Lines         499      511      +12     
==========================================
+ Hits          487      499      +12     
  Misses         12       12              

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[jdhoffa]

Code LGTM, but can you explain a bit more in the comment what the problem was that was causing inconsistent test failures, and how this fixes that?

I don't entirely understand why these changes are necessary (beyond solving failing local tests)

[AlexAxthelm]

I think that the common issue that I was seeing is that I was depending on some fields in the output of pkgdepends::lib_status that aren't guaranteed to be there. This change basically introduces some logic so that it only includes non-NULL values for those fields when relevant.

[jdhoffa]

Makes sense!