feat(develop-docs): Add alternative masking strategies

[philprime]

This PR is still work in progress and only here for comparing cleaning up merge conflicts

[github-actions]

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🚫	Please consider adding a changelog entry for the next release.

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📖	Do not forget to update Sentry-docs with your feature once the pull request gets approved.

Instructions and example for changelog

Please add an entry to CHANGELOG.md to the "Unreleased" section. Make sure the entry includes this PR's number.

Example:

## Unreleased

### Features

- Add alternative masking strategies ([#6619](https://github.com/getsentry/sentry-cocoa/pull/6619))

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[codecov]

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[philprime]

Also consider these approaches:

• Defensive-programming approach, masking everything unless there is a 100% certainty an area can be unmasked safely (safest but most complicated approach)
• Rebuilding a wireframe using colored rectangles based on the view hierarchy, without calling draw methods (should also result in performance improvement)
• Draw the view into a PDF context, then use PDF manipulation to remove all images (probably not possible because the rendered view is an image by itself)