Allow mixed custom objectId environment

[cbaker6]

Properly allow a mixed custom objectId environment without compromising safety checks using .save(). If a developer wants to ignore the objectId checks, they need to specify isIgnoreCustomObjectIdConfig = true each time.

Added the following warning to the documentation:

If you are using ParseConfiguration.allowCustomObjectId = true and plan to generate all of your objectId's on the client-side then you should leave isIgnoreCustomObjectIdConfig = false. Setting ParseConfiguration.allowCustomObjectId = true and isIgnoreCustomObjectIdConfig = true means the client will generate objectId's and the server will generate an objectId only when the client does not provide one. This can increase the probability of colliding objectId's as the client and server objectId's may be generated using different algorithms. This can also lead to overwriting of ParseObject's by accident as the client-side checks are disabled. Developers are responsible for handling such cases.`

• Add isIgnoreCustomObjectIdConfig to saves
• Add test cases
• Add documentation
• Update change log
• Prepare for release

[cbaker6]

@TomWFox can you look through the documentation when you get a chance?

[codecov]

Codecov Report

Merging #222 (f9be817) into main (f584819) will increase coverage by 0.00%.
The diff coverage is 96.07%.

@@           Coverage Diff           @@
##             main     #222   +/-   ##
=======================================
  Coverage   83.59%   83.59%           
=======================================
  Files          76       76           
  Lines        7265     7284   +19     
=======================================
+ Hits         6073     6089   +16     
- Misses       1192     1195    +3     

Impacted Files	Coverage Δ
Sources/ParseSwift/Operations/ParseOperation.swift	75.72% <0.00%> (ø)
Sources/ParseSwift/API/API+Commands.swift	86.84% <100.00%> (ø)
...ParseSwift/Objects/ParseInstallation+combine.swift	100.00% <100.00%> (ø)
Sources/ParseSwift/Objects/ParseInstallation.swift	79.48% <100.00%> (+0.19%)	⬆️
...urces/ParseSwift/Objects/ParseObject+combine.swift	100.00% <100.00%> (ø)
Sources/ParseSwift/Objects/ParseObject.swift	78.31% <100.00%> (+0.22%)	⬆️
Sources/ParseSwift/Objects/ParseUser+combine.swift	93.22% <100.00%> (+0.23%)	⬆️
Sources/ParseSwift/Objects/ParseUser.swift	82.84% <100.00%> (-0.05%)	⬇️
Sources/ParseSwift/Storage/KeychainStore.swift	97.75% <100.00%> (ø)
Sources/ParseSwift/Coding/AnyEncodable.swift	61.18% <0.00%> (-0.66%)	⬇️
... and 2 more

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[TomWFox]

I've been on holiday hence the delay ;)

It looks good 👍🏻