Melee: added better collision model, with a fallback mechanism (in case user provides incorrect model) and a reset button in a melee tab

-Fixed startup laser pointer state hook (it was forcing it on)

-Complete rewrite of the pickup mechanics:

* Addressed the bug where you could pick up 2 items with one hand at the same time, and the second one would start levitating after drop.
* Addressed the bug where if you would pickup a weapon that is on top of the prop, you would have that prop glued to your hand as a bonus.
* Added a pickup boost for a weapons, so it would be easier to pickup while precision is needed for props.
* Now in settings pickup limit is a checkbox. That either turns weight limit on or off, not a slider with 4 values that doesn't change anything ( it wasn't my code ahaha)

-More reliable way to trigger auto start after map change

-VGUI: Fixed ArcVR menu is not showing for the client

-Fixed laser pointer not staying on after reload

-Fixed multiplayer

-UI: Preventing numpad from getting "stuck"

-VGUI: fixed lua error on exit from the vgui settings

-UI: added ability to interact with UI and numpad in a vehicle with grips