revert: feat(balance): changes in base zombie drops

[RoyalFox2140]

Checklist

Required

• I wrote the PR title in conventional commit format.
• I ran the code formatter.
• I linked any relevant issues using github keyword syntax so it can be closed automatically.
• I have committed my changes to new branch that isn't main so it won't cause conflict when updating main branch later.

Purpose of change

#5197 slashed firearm spawn rates by 70%, changed tool spawns by a large amount, and cut back on the amount of smokers and thus available morale boosts via cigs a lot. These changes were snuck in relatively quietly as the community wasn't informed at such a huge shift in loot, additionally After I spoke with Chaosvolt he seemed unaware of how significant the firearm spawns were slashed.

Describe the solution

Revert. Something of this dramatic decision needs polling. I've talked to a number of people on the Discord, people notice there's a lot less guns but don't understand why, this was never communicated.

Describe alternatives you've considered

Partial revert, but we'll work on it more as a group.

Testing

It worked before this PR and it worked after. Tests will test.

Additional context

[chaosvolt]

Couple things in the revert seem okay to keep, the rest seems acceptable to revert.

[RoyalFox2140]

@chaosvolt Check it now, suggestions comitted