Equip fixes and more

What's happened since my last post? These things:

• I've got a version of the service pinned to code jam hosted on GCP. Go on and ssh 35.185.20.244 -p 2222 and enjoy. Once the rating period is over I'll be deploying dailies there instead.
• The macOS version of the server now has a (very basic) UI so you don't need to run via the terminal. Once I figure out cross-compilation I'll do the same for the Windows version.
• Picking up weapons/equippable items puts them in your inventory instead of auto-equipping them.
• You're now assigned a set of slots when you create your character. These slots can hold various types of armor/weaponry. Only weaponry naturally occurs and only 3 of the 9 types of weapon spawn, but this means the character class system based on strengths is getting fleshed out.
• To equip an item, you go into the inventory view, use [ and ] to select the item, and then press the corresponding key on your equipment pane to equip. The only way to unequip now is to equip a different weapon, which will move the old item back into your inventory.

I want to:

• Add more interesting terrain generation with corresponding enemies and drops
• Armor doesn't do anything now. This is a moot point since there are no armor drops, but I need to add that into combat mechanics.
• Combat implementation lives interwoven in BoltDB implementation. This needs to be factored out.