Don't lose upgrades on death

[L-as]

A big part of combat should be that you learn to play the lifeforms IMO. For that reason, no upgrade which has been bought with skill points you have gained by levelling up should be lost on death. You should instead respawn with the old upgrades.

You can do other things to encourage not dying, such as:

• Prolonged respawn times depending on the strength of your lifeform
• Bonuses gained by gaining bonus à la skulks with shotguns
• Losing when dying, but without being able to go a level down, à la Path of Exile

[MysteriousMilk]

As a part of this, I'll add the pistol back as a default weapon instead of an upgrade.

[MysteriousMilk]

List of things to do:

• [x] Add pistol back to initial loadout
• [x] Switch all upgrades to persistent
• [ ] Higher lifeforms and exos should be lost on death (since they are going to be hardcapped) and cost refunded
• [ ] Need a way to respec upgrades (refund all points so player can respend)