fix: Improve Equatable and Hashable conformance

[cbaker6]

New Pull Request Checklist

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

Issue Description

Approach

TODOs before merging

• Add tests
• Add entry to changelog

[codecov]

Codecov Report

Attention: 10 lines in your changes are missing coverage. Please review.

Comparison is base (dc037bd) 91.75% compared to head (189687d) 91.81%.

Files	Patch %	Lines
...rces/ParseSwift/LiveQuery/LiveQueryConstants.swift	0.00%	5 Missing ⚠️
Sources/ParseSwift/LiveQuery/ParseLiveQuery.swift	50.00%	2 Missing ⚠️
Sources/ParseSwift/Protocols/Objectable.swift	66.66%	2 Missing ⚠️
Sources/ParseSwift/Extensions/Encodable.swift	94.11%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #148      +/-   ##
==========================================
+ Coverage   91.75%   91.81%   +0.05%     
==========================================
  Files         178      178              
  Lines       15715    15800      +85     
==========================================
+ Hits        14419    14506      +87     
+ Misses       1296     1294       -2     

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