feat(server/inventory): Split randomloot convar

[jag3dagster]

• Splits inventory:randomloot convar functionality between two new convars: inventory:randomdumpsterloot and inventory:randomvehicleloot
• Has backwards compatibility with inventory:randomloot

NOTE: Don't worry about the massive line change count, I just cleaned up the leading whitespace to be all tabs instead of tabs / spaces mixed. Turn off whitespace comparison to see the ~20 lines actually changed

[jag3dagster]

This is a proposed change to split the functionality of the randomloot convar. I've noticed several people wanting to turn off just the dumpster diving loot but leave the vehicle loot, this is one backwards compatible way to do that.

[thelindat]

Whitespace should be 4 spaces - inventory is mixed since I haven't done a full reformat since it's generally a nuisance when rebasing.

[jag3dagster]

Swapped to 4 space whitespace