UICommon: Create Load/DynamicInputTextures directory on startup

Fix console error spam on Dolphin and game startup if the directory
doesn't exist.

Source/Core/UICommon/UICommon.cpp

@@ -81,6 +81,7 @@ static void CreateLoadPath(std::string path)
   File::CreateFullPath(File::GetUserPath(D_HIRESTEXTURES_IDX));
   File::CreateFullPath(File::GetUserPath(D_RIIVOLUTION_IDX));
   File::CreateFullPath(File::GetUserPath(D_GRAPHICSMOD_IDX));
+  File::CreateFullPath(File::GetUserPath(D_DYNAMICINPUT_IDX));
 }
 
 static void CreateResourcePackPath(std::string path)