after many comments and learning the difference between a javelin and a harpoon, ive changed the names of everything here from javelin to harpoon

alright i saw all your comments, the javelin makes enemies stick to walls now

changed weld force limit to 0 by default

added players velocity to the javelin when you throw it
added a sound when the javelin is thrown

the javelin entity should almost always fully go into prop or wall. no more floating javelin!
it also shouldnt stunt the movement of whatever it was thrown into anymore

new convar, jav_weldforcelimit. changes the forcelimit of the weld when the javelin goes into a prop

fixed a lua error if you picked up the javelin immediately after throwing it
fixed a problem where other weapons viewmodels would go weird if the javelin weapon was dropped, thanks zekkriel for reporting the problem