Tweak Incinerator Warmup and Cooldown

[GrahammerTek]

Changes

• Change the Incinerator's warmup time to that of SMG/shotgun type weapons, fix the absurdly high cooldown time.

Reasoning

• Flamethrowers in CE are close-ranged spray and pray weapons, similar to a shotgun or SMG, yet they use the warm up times of full-sized rifles. This caused many situations where pawns won't fire until the target is basically inside the minimum firing range circle and getting dangerously close to the shooter.
• The incinerator for some reason had a whopping 1.1 extra seconds of cooldown time compared to the RM2. Simply set the cooldown to that of the RM2's.

Alternatives

• "Hold still while I aim this flamethrower"

Testing

Check tests you have performed:

• Compiles without warnings
• Game runs without errors
• Playtested a colony (specify how long)

[github-actions]

You can download the rebuilt assembly for this PR here: https://combatextended.lp-programming.com/CombatExtended-12219746410.zip