feat: Add support for watchOS push notifications

[cbaker6]

New Pull Request Checklist

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

Issue Description

Closes: #361

Approach

Similar approach to #58

TODOs before merging

• Add tests
• Add changes to documentation (guides, repository pages, in-code descriptions)

[parse-github-assistant]

Thanks for opening this pull request!

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

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 100.00%. Comparing base (5cd5170) to head (2578fe3).
Report is 27 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff            @@
##            master      #360   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files            9         9           
  Lines         1296      1351   +55     
=========================================
+ Hits          1296      1351   +55     

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[cbaker6]

@mtrezza this is ready for review

[mman]

@cbaker6 Does parse server push config need to be modified in some way in order to support delivery to watchOS? I suppose it does and if so, could you please update it in the README? Thx!

[cbaker6]

Does parse server push config need to be modified in some way in order to support delivery to watchOS? I suppose it does and if so, could you please update it in the README? Thx!

watchos needs to be added to the config. I updated the README in the commit 4cdbc82 to reflect watchOS similar to the other OS's. The README doesn't go into detail about how to configure. I assume you mean updating the overall Parse documentation here: https://docs.parseplatform.org/parse-server/guide/#push-notifications. I can open another PR for that (PR in docs is here: parse-community/docs#956)

[mtrezza]

Looks good

[parseplatformorg]

🎉 This change has been released in version 6.10.0