feat: Improve ParseError reporting by propagating Swift.Error

[cbaker6]

New Pull Request Checklist

• I am not disclosing a vulnerability.
• I am creating this PR in reference to an issue.

Issue Description

ParseError currently embeds Swift.Error's into its' message property making it hard to use as the String needs to be parsed.

Approach

Add a new property to ParseError called swift which is propagates the Swift.Error (when there is one).

TODOs before merging

• Add tests
• Add entry to changelog
• Add changes to documentation (guides, repository pages, in-code descriptions)

[cbaker6]

@kennic this PR adds the ability for ParseError to propagate Swift.Error. I recommend using this repo as oppose to the parse-community as it's far behind. You can see why I recommend to use this repo in #7

You can update to version 4.16.2 from your current code to experience no breaking changes. I will release 5.0.0 this week, which will have a number of breaking changes, but drastic improvements and features.

[codecov]

Codecov Report

Merging #64 (bd5fe3d) into main (2410ff6) will decrease coverage by 2.47%.
The diff coverage is 58.29%.

@@            Coverage Diff             @@
##             main      #64      +/-   ##
==========================================
- Coverage   90.00%   87.53%   -2.47%     
==========================================
  Files         166      126      -40     
  Lines       15025    12313    -2712     
==========================================
- Hits        13523    10778    -2745     
- Misses       1502     1535      +33     

Impacted Files	Coverage Δ
Sources/ParseSwift/API/API+Command.swift	76.73% <0.00%> (-10.24%)	⬇️
...Authentication/Protocols/ParseAuthentication.swift	78.08% <0.00%> (-5.62%)	⬇️
Sources/ParseSwift/Storage/ParseStorage.swift	82.14% <ø> (ø)
Sources/ParseSwift/Types/Query.swift	86.05% <25.80%> (-1.34%)	⬇️
Sources/ParseSwift/Objects/ParseUser.swift	90.34% <26.31%> (+1.98%)	⬆️
Sources/ParseSwift/Objects/ParseInstallation.swift	88.07% <29.41%> (+2.37%)	⬆️
Sources/ParseSwift/Types/ParseFile.swift	56.58% <33.33%> (-38.68%)	⬇️
Sources/ParseSwift/Extensions/URLSession.swift	63.21% <38.09%> (-18.36%)	⬇️
Sources/ParseSwift/Objects/ParseObject.swift	90.95% <46.15%> (+2.35%)	⬆️
...thentication/3rd Party/ParseApple/ParseApple.swift	86.25% <50.00%> (ø)
... and 82 more

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[kennic]

Wow, didn't know about this separation, thanks for pointing this out. Will definitely using this repo from now on.