feat: add includeAll computed property to Query

[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

includeAll should be a computed property since it doesn't take any arguments.

Related issue: #n/a

Approach

Add an includeAll computed property to Query and deprecate includeAll(). Improve documentation of fetch(includeKeys...) to mention use of "*" is only one level deep.

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 #362 (feeac54) into main (a82fd99) will increase coverage by 0.03%. The diff coverage is 100.00%.

@@            Coverage Diff             @@
##             main     #362      +/-   ##
==========================================
+ Coverage   87.91%   87.94%   +0.03%     
==========================================
  Files         114      114              
  Lines       12201    12207       +6     
==========================================
+ Hits        10726    10736      +10     
+ Misses       1475     1471       -4     

Impacted Files	Coverage Δ
...s/ParseSwift/Objects/ParseInstallation+async.swift	100.00% <ø> (ø)
...ParseSwift/Objects/ParseInstallation+combine.swift	92.94% <ø> (ø)
Sources/ParseSwift/Objects/ParseInstallation.swift	85.39% <ø> (ø)
Sources/ParseSwift/Objects/ParseObject+async.swift	100.00% <ø> (ø)
...urces/ParseSwift/Objects/ParseObject+combine.swift	92.94% <ø> (ø)
Sources/ParseSwift/Objects/ParseObject.swift	85.03% <ø> (ø)
Sources/ParseSwift/Objects/ParseUser+async.swift	100.00% <ø> (ø)
Sources/ParseSwift/Objects/ParseUser+combine.swift	95.55% <ø> (ø)
Sources/ParseSwift/Objects/ParseUser.swift	86.20% <ø> (ø)
Sources/ParseSwift/Types/Query.swift	94.37% <100.00%> (+0.04%)	:arrow_up:
... and 1 more

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