Update: README.md

Author: PR3C14D0

.github/README.md

@@ -11,3 +11,12 @@
 
 <img src="./img/Exeon_Logo_2.png" width="683px" height="384px"/>
 </div>
+
+# Third-Party
+- [Assimp](https://github.com/assimp/assimp)
+- [Mono](https://github.com/mono/mono)
+- [DirectXTK12](https://github.com/microsoft/DirectXTK12)
+- [ImGui](https://github.com/ocornut/imgui)
+- [DirectXMath](https://github.com/microsoft/DirectXMath)
+- [spdlog](https://github.com/gabime/spdlog)
+- [ImGuizmo](https://github.com/CedricGuillemet/ImGuizmo)