Updated Viewmodel Shader for Godot 4.3

Good Evening All,

With the release of Godot 4.3 we now have reverse Z depth buffering.

This breaks a core shader used in this template that I use to prevent clipping for the viewmodel.

I have loaded a fix for fresh download and also included the shader as a single file for those who are already using this template. I highly recommend just replacing the shader if this asset is already used in production.

If you have any other questions feel free to reach out on the discord.
Thanks,