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/macosx_cpn.yml

@@ -89,19 +89,8 @@ jobs:
           ./configure &&
           make install
 
-      - name: Install libsdl
-        run:   wget https://www.libsdl.org/release/SDL-1.2.15.tar.gz &&
-          tar xfv SDL-1.2.15.tar.gz &&
-          export MACOSX_DEPLOYMENT_TARGET=10.9 &&
-          cd SDL-1.2.15 &&
-          wget 'https://bugzilla-attachments.libsdl.org/attachment.cgi?id=1320' -O patch1 &&
-          wget 'https://bugzilla-attachments.libsdl.org/attachment.cgi?id=1324' -O patch2 &&
-          wget 'https://hg.libsdl.org/SDL/raw-rev/91ad7b43317a' -O patch3 &&
-          patch -p1 < patch1 &&
-          patch -p1 < patch2 &&
-          patch -p1 < patch3 &&
-          ./configure --without-x &&
-          make install
+      - name: Install SDL2
+        run:  brew install SDL2
 
       - name: Build
         working-directory: ${{github.workspace}}

.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

.github/workflows/win_cpn-64.yml

@@ -68,7 +68,7 @@ jobs:
                                 mingw-w64-x86_64-openjpeg2 \
                                 mingw-w64-x86_64-libimagequant \
                                 mingw-w64-x86_64-libraqm \
-                                mingw-w64-x86_64-SDL \
+                                mingw-w64-x86_64-SDL2 \
                                 mingw-w64-x86_64-clang \
                                 mingw-w64-x86_64-nsis
           python -m pip install clang