Merge pull request #1281 from Unity-Technologies/switch_support

Switch support - readd removed submodule

.gitmodules

 	url = https://github.com/Unity-Technologies/ShaderGraph
 [submodule "Tests/UTF_Core"]
 	path = Tests/UTF_Core
-url=https://github.com/Unity-Technologies/UTF_Core.git
+	url = https://github.com/Unity-Technologies/UTF_Core.git
-url=https://github.com/Unity-Technologies/UTF_Tests_HDRP.git
+	url = https://github.com/Unity-Technologies/UTF_Tests_HDRP.git