CMakePresets.json should have a single definition for ENABLE_FRONTEND_API and ENABLE_QT

[Susko3]

Operating System Info

Windows 11

Expected Behavior

I should be able to change the values of ENABLE_FRONTEND_API and ENABLE_QT in one place and have them apply to all operating systems.

Current Behavior

I have to change ENABLE_FRONTEND_API and/or ENABLE_QT on each OS I support.

Steps to Reproduce

1. Use this template
2. In your plugin, make us of QT or the OBS frontend api
   • this requires setting the appropriate build variables, so you:
3. Open CMakePresets.json and quickly realise you need to set the same value multiple times, leading to possible user-errors

Anything else we should know?

Using inheritance and a single preset for the two cross-platform variables makes sense as a solution.

[PatTheMav]

As you already mentioned the appropriate fix for the issue (create a hidden "template" preset with global values), would you be willing to open a PR to fix this accordingly?

[Susko3]

I'm not too familiar with cmake presets, and there are currently a bunch of configurations for different operating systems. So I don't feel confident about changing things.

I was hoping someone with more experience would pick up my idea.