Projectile Limiter

Limits some stuff spawned by the player to prevent/avoid lag from spam and/or crashes.

Changes:

Radar Scanner:
- Subcooldown Timer increased from 0s to 5s
Eccentric Vase:
- Subcooldown Timer increased from 0s to 5s
Saw:
- Subcooldown Timer: Added option to change.
- Max of 30 saws out at once per player
Blackhole:
- Subcooldown Timer increased from 0s to 5

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