Update the FPS template to include an example of Gun/arms Clipping

[Doprez]

We should update the FPS template to include an example on how to prevent the players hands clipping through walls when they get too close.

Describe the solution you'd like
A few people have already figured it out in the discord and shared the general layout of their Graphics compositor. The template for the FPS controller should include this as the default compositor set up for people to reference.

Additional context
Discord messages:

• https://discord.com/channels/500285081265635328/500292388820877322/1288238818327007325
• https://discord.com/channels/500285081265635328/500292388820877322/1090051945730941089

They both have them resolved a few messages down.

Here are the images of their compositor settings in case it gets lost in Discord like it usually does:
Solution from TimelessScale:

Solution from Linus: