Add VS2019 professional too

Author: UnknownShadow200

MCGalaxy/Modules/Compiling/CompilerBackends.cs

@@ -194,6 +194,7 @@ protected override string GetExecutable() {
 
             string[] paths = new string[] {
                 // Modern Visual Studio compilers
+                @"C:\Program Files (x86)\Microsoft Visual Studio\2019\Professional\MSBuild\Current\Bin\Roslyn\csc.exe",
                 @"C:\Program Files (x86)\Microsoft Visual Studio\2019\Community\MSBuild\Current\Bin\Roslyn\csc.exe",
                 // First try new C# compiler
                 Path.Combine(root, "csc.exe"),