Add Default Material Setting For FPS Weapon FOV Scaling & Depth

[StayAtHomeDev-Git]

Encountered the FPS weapon depth and separate FOV problem while working an first person shooter project.

Most (older) online resources will utilize a separate viewport to separate the FOV setting for the player view model and the environment AND fix clipping/depth issues.

Another technique involves a custom shader and vertex manipulation.

To simplify for beginners, I would propose a default material setting that can be enabled to do the required vertex manipulation without having to create a custom shader.

Juan also mentioned this being a good addition to make it easier.