Validate shaders against GLSL 4.60 including compute stage

ci_shadervalidator/utilities/Logs.h

@@ -0,0 +1,16 @@
+#pragma once
+#include <iostream>
+#include <string>
+
+enum class logtype : unsigned int {
+	shader
+};
+
+// gl::shader reports #texture/#param parse errors through ErrorLog; the validator counts them as failures
+inline bool ErrorLogged = false;
+
+inline void ErrorLog(const std::string &str, logtype const)
+{
+	std::cerr << str << std::endl;
+	ErrorLogged = true;
+}