fix: ParsePolygon.containsPoint() correctly uses longitude and latitude

[cbaker6]

New Pull Request Checklist

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

Issue Description

ParsePolygon is encoded/decoded incorrectly with the latitude and longitude being (latitude, longitude) instead of (longitude, latitude).

Approach

Swap the latitude and longitude from (latitude, longitude) to (longitude, latitude). If a developer used ParseSwift <= 5.7.0 to save ParsePolygon's, they will need to update the respective ParseObjects by swapping the latitude and longitude manually.

TODOs before merging

• Add tests
• Add entry to changelog

[codecov]

Codecov Report

Merging #116 (2688192) into main (7e99505) will decrease coverage by 0.10%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##             main     #116      +/-   ##
==========================================
- Coverage   91.58%   91.49%   -0.10%     
==========================================
  Files         173      173              
  Lines       15408    15361      -47     
==========================================
- Hits        14111    14054      -57     
- Misses       1297     1307      +10     

Impacted Files	Coverage Δ
Sources/ParseSwift/Types/ParsePolygon.swift	97.72% <100.00%> (ø)

... and 6 files with indirect coverage changes