ShieldDamageMultiplier for bullets (#6331)

* ShieldDamageMultiplier + Dynamic damage multipliers

* Add to stats

* That's not right

* merge typo

---------

Co-authored-by: Anuken <arnukren@gmail.com>

core/src/mindustry/entities/abilities/ForceFieldAbility.java

@@ -41,8 +41,7 @@ public class ForceFieldAbility extends Ability{
         if(trait.team != paramUnit.team && trait.type.absorbable && Intersector.isInRegularPolygon(paramField.sides, paramUnit.x, paramUnit.y, realRad, paramField.rotation, trait.x(), trait.y()) && paramUnit.shield > 0){
             trait.absorb();
             Fx.absorb.at(trait);
-
-            paramUnit.shield -= trait.damage();
+            paramUnit.shield -= trait.type().shieldDamage(trait);
             paramField.alpha = 1f;
         }
     };