POI - Chasm - Changes

[ephemeralstoryteller]

On review, the chasm was looking a little empty and anemic on the loot front for the relative trouble you need to go through to access it.

• Adds 2 purity injectors as loot to incentivize exploring
• Reduces number of mutant spiders
• Adds a broken shotgun to the crater
• Adds more clutter (steel, shrapnel, etc)
• Makes power tools actually spawning a little more likely
• Adds a potential power tool spawn and a tech supply spawn in the lower left room
• Adds more rocks to the cave in in the lower right to reduce the amount of empty space