Add Kill Count Tracking and GUI Updates for TurretBase

[mak8427]

This PR introduces several updates and new features to the OpenModularTurrets project, specifically focusing on tracking the kill count for turrets and displaying this information in the GUI. The following changes have been made:

1. TurretBase.java:

   • Added a killCount field to track the number of kills made by the turret.
   • Implemented onKill method to increment the kill count when an entity is killed.
   • Added getter and setter methods for killCount.
   • Updated writeToNBT and readFromNBT methods to save and load the kill count.

2. GUI Updates:

   • Added the kill count display to the GUI for all turret tiers (TurretBaseTierOneGui, TurretBaseTierTwoGui, TurretBaseTierThreeGui, TurretBaseTierFourGui, TurretBaseTierFiveGui). The kill count is now shown as part of the target information.

3. Projectile Updates:

   • Updated various projectile classes (BlazingClayProjectile, BulletProjectile, DisposableTurretProjectile, FerroSlugProjectile, GrenadeProjectile, LaserProjectile, RocketProjectile) to ensure that kills are only counted once per entity, even if multiple projectiles hit the entity simultaneously.

Closes GTNewHorizons/GT-New-Horizons-Modpack#18740

[mak8427]

I have created a pull request to address this issue: GTNewHorizons/GT-New-Horizons-Modpack#18740

[serenibyss]

@mak8427 Thanks for addressing the reviews, this PR looks good now. Could you run gradlew spotlessApply to fix the failing test?

[thisHermit]

It should hopefully work now. I helped mak find the issue

[serenibyss]

Thanks!