[Feature] Doors welded and bolted shut can stop Kudzu growth

[kyle2143]

OK, made that change but tweaked the values a little bit. I'm not sure if this will be a kudzu buff or nerf with these, but this is how it looks.

Bolting/Electrifying/Welding all effect how well an airlock stands up to kudzu.

- A normal door now has a 90% chance to open
- A door with 1 (Bolting/Electrifying/Welding) = 50%
- A door with 2 = 25%
- A door with 3 = 0%


https://github.com/goonstation/goonstati...l/78/files