Migrate to slnx #30

Job	Run time
Build Unity package	3m 5s
Build Libraries / Build Native library (android-arm)	1m 37s
Build Libraries / Build Native library (osx-arm64)	9m 26s
Build Libraries / Build Native library (osx-x64)	7m 25s
Build Libraries / Build Native library (linux-x64)	3m 15s
Build Libraries / Build Native library (win-arm64)	2m 50s
Build Libraries / Build Native library (win-arm64-uwp)	3m 18s
Build Libraries / Build Native library (win-x64)	5m 43s
Build Libraries / Build Native library (android-x64)	1m 37s
Build Libraries / Build Native library (android-arm64)	1m 38s
Build Libraries / Build Native library (ios-arm64-sim)	50s
Build Libraries / Build Native library (ios-x64)	49s
Build Libraries / Build Native library (ios-arm64)	52s
Build Libraries / Build Native library (osx-universal)	18s
Build Libraries / Build and pack .NET library	13s
Build Libraries / Update pre-built libraries for Unity	0s
	42m 56s

Provide feedback