build: replace FetchContent with direct includes for glm

include/glm/ext/matrix_uint4x2.hpp

@@ -0,0 +1,33 @@
+/// @ref ext_matrix_uint4x2
+/// @file glm/ext/matrix_uint4x2.hpp
+///
+/// @see core (dependence)
+///
+/// @defgroup ext_matrix_uint4x2 GLM_EXT_matrix_uint4x2
+/// @ingroup ext
+///
+/// Include <glm/ext/matrix_uint4x2.hpp> to use the features of this extension.
+///
+/// Defines a number of matrices with integer types.
+
+#pragma once
+
+// Dependency:
+#include "../mat4x2.hpp"
+
+#if GLM_MESSAGES == GLM_ENABLE && !defined(GLM_EXT_INCLUDED)
+#	pragma message("GLM: GLM_EXT_matrix_uint4x2 extension included")
+#endif
+
+namespace glm
+{
+	/// @addtogroup ext_matrix_uint4x2
+	/// @{
+
+	/// Unsigned integer 4x2 matrix.
+	///
+	/// @see ext_matrix_uint4x2
+	typedef mat<4, 2, uint, defaultp>	umat4x2;
+
+	/// @}
+}//namespace glm