[cmake] Migrate more modules to TARGET usage

[fuzzard]

Description

Migrate more modules to TARGET usage

Motivation and context

Migrate more modules to target usage.
@sundermann @wsnipex of note for webOS is the commit to "simplify" FindWaylandProtocolsWebOS. As the pc file isnt from an upstream source, i felt its just easier to drop it. We are only looking for the xml files, so a simple find_path should be fine. I contemplated dropping the find module completely and moving the find_path to the ExtraTargets.cmake file, but i can see the argument for it being a dependency to check/find, so at least you get output in the configure step. Let me know if you would prefer it the way it was, but i dont see a point to make it a full TARGET style find module.

How has this been tested?

Build aarch64 macos and shoehorning webos find checks.

What is the effect on users?

N/A

Screenshots (if appropriate):

Types of change

• Bug fix (non-breaking change which fixes an issue)
• Clean up (non-breaking change which removes non-working, unmaintained functionality)
• Improvement (non-breaking change which improves existing functionality)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that will cause existing functionality to change)
• Cosmetic change (non-breaking change that doesn't touch code)
• Student submission (PR was done for educational purposes and will be treated as such)
• None of the above (please explain below)

Checklist:

• My code follows the Code Guidelines of this project
• My change requires a change to the documentation, either Doxygen or wiki
• I have updated the documentation accordingly
• I have read the Contributing document
• I have added tests to cover my change
• All new and existing tests passed

[fuzzard]

Jenkins build this please