fix: handle permissions for getUserMedia

[jcesarmobile]

closes #1888

The code is based on Capacitor's implementation.

It uses newer ActivityResultCallback/ActivityResultLauncher instead of the old requestPermissions.

This could later on be extended to request geolocation permissions as at the moment it requires the Geolocation plugin to be installed.

[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 61.43%. Comparing base (6b17223) to head (7106112).

Additional details and impacted files

@@           Coverage Diff           @@
##           master    #1895   +/-   ##
=======================================
  Coverage   61.43%   61.43%           
=======================================
  Files          24       24           
  Lines        4922     4922           
=======================================
  Hits         3024     3024           
  Misses       1898     1898           

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.
• 📦 JS Bundle Analysis: Save yourself from yourself by tracking and limiting bundle sizes in JS merges.