Mineraider Build 2 updates

Fixed a bunch of little issues with the original build and added changes to the game, enough to make it worth a separate build to preserve the LD54 compo results and my continued work on the game. 

Bug fixes:

• fixed inventory dropping below 0
• fixed colliders being set to default sizes
• fixed death sending player to victory screen instead of death screen.
• fixed a bug causing the “inventory full” message to display even if you were not full.
• fixed a collider being out of place.
• fixed a bug causing "worth" to not decrease when dropping an item.

changes:

• Changed victory conditions now you need a minimum of 2 items before you can use the elevator instead of a full inventory
• Change the inventory drop system instead of UI buttons you can now use num 1 - 5 to drop corresponding items to make room for higher value 
• Changed interact from E to Left mouse