fix: allow fully qualified ParseSwift types

[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

The ParseSwift framework has public struct named ParseSwift that causes an issue when developers want to use a fully qualified ParseSwift type.

Related issue: #396

Approach

Change the ParseSwift type to Parse and make the updated type internal. This results in zero changes necessary for a user of the SDK and enables the ability to use fully qualified types when necessary. This reverts a change that was added in #54

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]]

I will reformat the title to use the proper commit message syntax.

[parse-github-assistant[bot]]

Thanks for opening this pull request!

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

[codecov[bot]]

Codecov Report

Merging #397 (d514ad1) into main (a143c0f) will decrease coverage by 0.01%. The diff coverage is 91.31%.

@@            Coverage Diff             @@
##             main     #397      +/-   ##
==========================================
- Coverage   89.69%   89.67%   -0.02%     
==========================================
  Files         157      158       +1     
  Lines       15072    15075       +3     
==========================================
  Hits        13519    13519              
- Misses       1553     1556       +3     

Impacted Files	Coverage Δ
...s/ParseSwift/Objects/ParseInstallation+async.swift	100.00% <ø> (ø)
...ParseSwift/Objects/ParseInstallation+combine.swift	93.81% <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	87.29% <ø> (-0.15%)	:arrow_down:
Sources/ParseSwift/Objects/ParseUser+async.swift	100.00% <ø> (ø)
Sources/ParseSwift/Objects/ParseUser+combine.swift	95.71% <ø> (ø)
Sources/ParseSwift/Types/ParseField.swift	100.00% <ø> (ø)
...t/Types/ParsePushPayload/ParsePushPayloadAny.swift	100.00% <ø> (ø)
Sources/ParseSwift/Types/QueryWhere.swift	100.00% <ø> (ø)
... and 21 more

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