[Feature] Throwing Stuff

[Arborinus]

It's summer which means I have time to badly code some more useless knick-knacks.




Features:

• Alters throwing.dm to allow an object to be set to not spin when thrown.
  
• Adds paper planes: Right click paper in hand like you would for a paper hat and select "Fold into plane". Paper planes glide until they hit something and can be set on fire, maybe they can be used as remote plasma fire starters?
  
• Adds bar darts and dartboards: When the dart is thrown at the dartboard, it will "stick" to it and display a score. In order for things to work, put a dartboard on a tile below a wall and give it a pixel_y of 26. When a dart is thrown at someone, there is a chance it will stick to them and need to be surgically removed.
  
• Adds a new traitor item, Lawn darts. They come in a kit of 3 darts available to assistants, clowns and barmen for 4 telecrystals. When thrown at someone they will stun and cause bleed the same as a syndicate dagger, but will become embedded in the target and need to be surgically removed.
  

The way the dartboard works is extremely hacky (much like the rest of my code), and I'm not sure how it will work with Dr. Singh's "throw object to exact position" change. 
The telecrystal cost for lawn darts might need to be changed, I wasn't sure how to balance it.
I'm fine with names and descriptions being changed, I couldn't come up with anything good.

Compare: https://github.com/goonstation/goonstati...f?expand=1