fix: some async/await methods won't throw errors

[cbaker6]

New Pull Request Checklist

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

Issue Description

Async/await methods that have void returns won't throw errors received from the server; particularly delete(), logout(), ParseUser.verif...(), and ParseAnalytics methods. They would on throw http errors.

In addition, some places in the code still force unwrap or can be done with less code.

Related issue: #n/a

Approach

The the returned value of async/await void methods and throw errors if needed.

Remove force unwrapping and clean up code.

TODOs before merging

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

[parse-github-assistant[bot]]

Thanks for opening this pull request!

• 🎉 We are excited about your hands-on contribution!

[codecov[bot]]

Codecov Report

Merging #334 (7584949) into main (d2de796) will increase coverage by 0.06%. The diff coverage is 78.43%.

@@            Coverage Diff             @@
##             main     #334      +/-   ##
==========================================
+ Coverage   85.06%   85.13%   +0.06%     
==========================================
  Files         114      114              
  Lines       12188    12208      +20     
==========================================
+ Hits        10368    10393      +25     
+ Misses       1820     1815       -5     

Impacted Files	Coverage Δ
Sources/ParseSwift/Objects/ParseInstallation.swift	82.49% <0.00%> (+0.13%)	:arrow_up:
Sources/ParseSwift/Objects/ParseUser.swift	83.18% <42.85%> (+0.27%)	:arrow_up:
...ources/ParseSwift/Types/ParseAnalytics+async.swift	90.00% <75.00%> (-10.00%)	:arrow_down:
...s/ParseSwift/Objects/ParseInstallation+async.swift	100.00% <100.00%> (ø)
Sources/ParseSwift/Objects/ParseObject+async.swift	100.00% <100.00%> (ø)
Sources/ParseSwift/Objects/ParseUser+async.swift	100.00% <100.00%> (ø)
Sources/ParseSwift/Types/ParseFile+async.swift	100.00% <100.00%> (ø)
Sources/ParseSwift/Objects/ParseObject.swift	82.74% <0.00%> (+0.45%)	:arrow_up:
... and 1 more

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