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

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:

Start by locating the FPS template and its default Graphics compositor setup. Review the linked Discord discussions and attached compositor images for the intended arrangement, then update the template so it includes a reference example for preventing hands or guns from clipping through walls; done means the example is present and usable by new FPS projects.