fix: saving nested ParseObjects and ParseFiles

[cbaker6]

New Pull Request Checklist

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

Issue Description

Deep saving ParseFile's and in some cases, ParseObject's do not save correctly.

Approach

The nested ParseObject's and ParseFile's are saving to the server correctly, but the nested objects aren't being used properly when deep saving. Pass the saved child objects back to the parent object when deep saving.

TODOs before merging

• Add tests
• Add entry to changelog

[codecov-commenter]

Codecov Report

Merging #8 (630c371) into main (8c58ad2) will increase coverage by 0.01%.
The diff coverage is 96.55%.

@@            Coverage Diff             @@
##             main       #8      +/-   ##
==========================================
+ Coverage   90.37%   90.38%   +0.01%     
==========================================
  Files         161      161              
  Lines       16319    16335      +16     
==========================================
+ Hits        14748    14765      +17     
+ Misses       1571     1570       -1     

Impacted Files	Coverage Δ
Sources/ParseSwift/Coding/ParseEncoder.swift	78.14% <83.33%> (ø)
...urces/ParseSwift/API/API+NonParseBodyCommand.swift	81.92% <100.00%> (+0.33%)	⬆️
Sources/ParseSwift/Objects/ParseObject+async.swift	96.66% <100.00%> (+0.07%)	⬆️
Sources/ParseSwift/Objects/ParseObject.swift	90.18% <100.00%> (+0.06%)	⬆️
Sources/ParseSwift/Protocols/Objectable.swift	92.30% <100.00%> (+0.20%)	⬆️
Sources/ParseSwift/Objects/ParseUser+async.swift	93.52% <0.00%> (+0.40%)	⬆️

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[cbaker6]

@bcbeta this should fix the issue you were having with ParseFile.

[bcbeta]

Yes this fixed it! Thank you.