[Feat] (...): Add GLES Backend.

include/glm/ext/quaternion_float.hpp

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+/// @ref ext_quaternion_float
+/// @file glm/ext/quaternion_float.hpp
+///
+/// @defgroup ext_quaternion_float GLM_EXT_quaternion_float
+/// @ingroup ext
+///
+/// Exposes single-precision floating point quaternion type.
+///
+/// Include <glm/ext/quaternion_float.hpp> to use the features of this extension.
+///
+/// @see ext_quaternion_double
+/// @see ext_quaternion_float_precision
+/// @see ext_quaternion_common
+/// @see ext_quaternion_exponential
+/// @see ext_quaternion_geometric
+/// @see ext_quaternion_relational
+/// @see ext_quaternion_transform
+/// @see ext_quaternion_trigonometric
+
+#pragma once
+
+// Dependency:
+#include "../detail/type_quat.hpp"
+
+#if GLM_MESSAGES == GLM_ENABLE && !defined(GLM_EXT_INCLUDED)
+#	pragma message("GLM: GLM_EXT_quaternion_float extension included")
+#endif
+
+namespace glm
+{
+	/// @addtogroup ext_quaternion_float
+	/// @{
+
+	/// Quaternion of single-precision floating-point numbers.
+	typedef qua<float, defaultp>		quat;
+
+	/// @}
+} //namespace glm
+