[Feat] (MG_Backend/DirectGLES): Implement basic stuff for DirectGLES backend.

MobileGL/MG_Util/Types.h

@@ -56,6 +56,9 @@ namespace MobileGL {
     inline constexpr void Copy(const T* src, T* dest, SizeT count) {
         std::copy(src, src + count, dest);
     }
+    inline constexpr void Memcpy(const void* src, void* dest, SizeT size) {
+        std::memcpy(dest, src, size);
+    }
     template <typename... Ts>
     constexpr auto ToArray(Ts&&... elems) {
         using E = std::common_type_t<Ts...>;