fix: Set CodeSigning Entitlements in Xcode Project at Target level

[dpogue]

Platforms affected

iOS

Motivation and Context

Closes GH-1135.

Description

Moved CODE_SIGN_ENTITLEMENTS from the xcconfig (which affects the entire project and all its targets) to the target settings of the application target within the Xcode project.

Testing

Confirmed manually that the Xcode project settings for the target have the expected values.

Checklist

• [x] I've run the tests to see all new and existing tests pass
• [x] If this Pull Request resolves an issue, I linked to the issue in the text above (and used the correct keyword to close issues using keywords)

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 78.35%. Comparing base (2240ebc) to head (1cb893a).

Additional details and impacted files

@@           Coverage Diff           @@
##           master    #1438   +/-   ##
=======================================
  Coverage   78.35%   78.35%           
=======================================
  Files          16       16           
  Lines        1825     1825           
=======================================
  Hits         1430     1430           
  Misses        395      395           

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[expcapitaldev]

hi Cordova team, very important issue, waiting!