feat: add enableCopy

[lcschy]

Description

• Adds enableCopy and copyIconColor options to the TextElement
• Adds copy and check icons to package Resources for both SPM and CocoaPods
• Change the way readOnly works from disabling user interaction to an approach using becomeFirstResponder
  • Effect is the same, can't edit.
  • Reason for changing is that if userInteraction is disabled you can't interact w/ the copy button.

Testing required outside of automated testing?

• Not Applicable

Screenshots (if appropriate):

• Not Applicable

Rollback / Rollforward Procedure

• Roll Forward
• Roll Back

Reviewer Checklist

• Description of Change
• Description of outside testing if applicable.
• Description of Roll Forward / Backward Procedure
• Documentation updated for Change