chore: Convert simu/simulator/companion to SDL2 (#3085)

* 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

.github/workflows/win-cpn-32.yml

@@ -54,7 +54,7 @@ jobs:
                                 mingw-w64-i686-openjpeg2 \
                                 mingw-w64-i686-libimagequant \
                                 mingw-w64-i686-libraqm \
-                                mingw-w64-i686-SDL \
+                                mingw-w64-i686-SDL2 \
                                 mingw-w64-i686-clang \
                                 mingw-w64-i686-nsis
           python -m pip install clang