[GM] Head Bobbing Demo

A demo of my head bobbing mod, as of November 2022. My version support&Stiffy360&Prone mod, as well as having multiple controls and toggles to tweak it to your own personal preferences. There&also several blacklist toggles for the Physic Gun, Tool Gun, and Camera, just in case you want your build tools to maintain non-shakeycam precision. It&an expanded version of LuaPineapple&absolutely ancient head bobbing mode from c.2008, so credit to them for the original code I&working off of.