Add workflow files to workspace

Author: josetr

build/premake5.lua

@@ -36,6 +36,7 @@ workspace "CppSharp"
 
   workspacefiles(path.join(builddir, "premake5.lua"))
   workspacefiles(path.join(builddir, "*.sh"))
+  workspacefiles(path.join(rootdir, ".github/workflows/*.yml"))
   workspacefiles(path.join(rootdir, "tests/Test*.props"))
   WriteConfigForMSBuild()