* chore(pc): convert simu/simulator/companion to use SDL2
* switch companion builds to SDL2 - OSX is not converted
the linux change is done a bit hacky, it should be done by updating the EdgeTX docker container
* update build system setup scripts
* add compatibility for old and new SDL2 cmake integration
* fix windows installer
* fix simulator audio on windows by using DirectSound vie SDL2
* fix windows audio with SDL2
enable simu for windows builds
* remove workflow changes for linux builds, this needs to be fixed in the build environment
* fix OSX build, thx @pafleraf
* fix windows audio for companion and simulator with SDL2
* select SDL2 branch of the build-docker environment
* Revert "select SDL2 branch of the build-docker environment"
This reverts commit da801609d78e1aed513ad7d9d8ab3ebded2900b9.
* fix tests with SDL2
