Add macOS simulator build to pipelines (#162)

- GitHub actions changed to build simulator on macOS (it's broken, but at least we get a good code portability check for now!)
- `Buildscripts/` shell scripts updated to use `/bin/sh` so it works on macOS too
- Various includes fixed in various subprojects so the code is more portable

Tactility/Source/app/files/FileUtils.cpp

@@ -1,7 +1,6 @@
 #include "FileUtils.h"
 #include "TactilityCore.h"
 #include <cstring>
-#include <bits/stdc++.h>
 #include <StringUtils.h>
 
 namespace tt::app::files {