Add C++ 20 Modules (#1208)

* Add support for C++20 modules.

---------

Co-authored-by: Nikita Gubarkov <nikita.gubarkov@jetbrains.com>
Co-authored-by: YaaZ <764610@gmail.com>

glm/gtx/number_precision.hpp

@@ -0,0 +1,47 @@
+/// @ref gtx_number_precision
+/// @file glm/gtx/number_precision.hpp
+///
+/// @see core (dependence)
+/// @see gtc_type_precision (dependence)
+/// @see gtc_quaternion (dependence)
+///
+/// @defgroup gtx_number_precision GLM_GTX_number_precision
+/// @ingroup gtx
+///
+/// Include <glm/gtx/number_precision.hpp> to use the features of this extension.
+///
+/// Defined size types.
+
+#pragma once
+
+// Dependency:
+#include "../glm.hpp"
+#include "../gtc/type_precision.hpp"
+
+#if GLM_MESSAGES == GLM_ENABLE && !defined(GLM_EXT_INCLUDED)
+#	ifndef GLM_ENABLE_EXPERIMENTAL
+#		pragma message("GLM: GLM_GTX_number_precision is an experimental extension and may change in the future. Use #define GLM_ENABLE_EXPERIMENTAL before including it, if you really want to use it.")
+#	else
+#		pragma message("GLM: GLM_GTX_number_precision extension included")
+#	endif
+#endif
+
+namespace glm{
+	/////////////////////////////
+	// Unsigned int vector types
+
+	/// @addtogroup gtx_number_precision
+	/// @{
+
+	//////////////////////
+	// Float matrix types
+
+	typedef f32			f32mat1;	//!< \brief Single-qualifier floating-point scalar. (from GLM_GTX_number_precision extension)
+	typedef f32			f32mat1x1;	//!< \brief Single-qualifier floating-point scalar. (from GLM_GTX_number_precision extension)
+	typedef f64			f64mat1;	//!< \brief Double-qualifier floating-point scalar. (from GLM_GTX_number_precision extension)
+	typedef f64			f64mat1x1;	//!< \brief Double-qualifier floating-point scalar. (from GLM_GTX_number_precision extension)
+
+	/// @}
+}//namespace glm
+
+#include "number_precision.inl"