ParseInstallation no longer requires dispatching to main queue

[cbaker6]

Reasoning/discussion in #113. This is a breaking changing, but will allow for easier and more predictable use of ParseInstallation. If the developer wants to save the latest badge value, they should retrieve it before saving the installation.

Fix #113

• Remove the usage of UIKit and AppKit in the SDK.
• Removed dispatching when using ParseInstallation
• Updated playgrounds
• Added changelog entry
• Updated Installation documentation
• Prepare for new release

[codecov]

Codecov Report

Merging #114 (a088b86) into main (3852a93) will decrease coverage by 0.10%.
The diff coverage is 100.00%.

❗ Current head a088b86 differs from pull request most recent head a92856e. Consider uploading reports for the commit a92856e to get more accurate results

@@            Coverage Diff             @@
##             main     #114      +/-   ##
==========================================
- Coverage   81.06%   80.95%   -0.11%     
==========================================
  Files          65       65              
  Lines        5482     5461      -21     
==========================================
- Hits         4444     4421      -23     
- Misses       1038     1040       +2     

Impacted Files	Coverage Δ
Sources/ParseSwift/Storage/KeychainStore.swift	97.75% <ø> (ø)
Sources/ParseSwift/Objects/ParseInstallation.swift	82.54% <100.00%> (-0.69%)	⬇️
Sources/ParseSwift/Parse.swift	100.00% <100.00%> (ø)
...t/LiveQuery/Protocols/ParseLiveQueryDelegate.swift	0.00% <0.00%> (-20.00%)	⬇️
Sources/ParseSwift/Objects/ParseUser.swift	81.22% <0.00%> (-0.16%)	⬇️

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[cbaker6]

@TomWFox can you look over the updated docs for ParseInstallation when you get a chance?

[TomWFox]

LGTM 👍