Introduce AirAttackType

Aircraft attack behavior (currently FlyBy or Hover)
is now controlled via this instead of the CanHover boolean.

mods/cnc/rules/aircraft.yaml

@@ -93,6 +93,7 @@ HELI:
 		FacingTolerance: 20
 		OpportunityFire: false
 		PersistentTargeting: false
+		AttackType: Hover
 	AmmoPool:
 		Ammo: 10
 		PipCount: 5
@@ -154,6 +155,7 @@ ORCA:
 		FacingTolerance: 20
 		OpportunityFire: false
 		PersistentTargeting: false
+		AttackType: Hover
 	AmmoPool:
 		Ammo: 6
 		PipCount: 6

mods/ra/rules/aircraft.yaml

@@ -305,6 +305,7 @@ HELI:
 	AttackAircraft:
 		FacingTolerance: 20
 		PersistentTargeting: false
+		AttackType: Hover
 	Aircraft:
 		LandWhenIdle: false
 		TurnSpeed: 4
@@ -373,6 +374,7 @@ HIND:
 	AttackAircraft:
 		FacingTolerance: 20
 		PersistentTargeting: false
+		AttackType: Hover
 	Aircraft:
 		LandWhenIdle: false
 		TurnSpeed: 4

mods/ts/rules/aircraft.yaml

@@ -109,6 +109,7 @@ ORCA:
 		PersistentTargeting: false
 		Voice: Attack
 		PauseOnCondition: empdisable
+		AttackType: Hover
 	AmmoPool:
 		Ammo: 5
 		PipCount: 5
@@ -352,6 +353,7 @@ APACHE:
 		PersistentTargeting: false
 		Voice: Attack
 		PauseOnCondition: empdisable
+		AttackType: Hover
 	AmmoPool:
 		Ammo: 12
 		PipCount: 4
@@ -391,6 +393,7 @@ HUNTER:
 		VTOL: true
 	AttackAircraft:
 		FacingTolerance: 128
+		AttackType: Hover
 	Armament@PRIMARY:
 		Weapon: SuicideBomb
 	GrantConditionOnAttack: