feat: add optecton target handling; add attack targeting types

This adds handling for new Optecton attack concept. Also adds some other targeting types that are potentially useful.

RequiresTarget,					// If target doesn't exist, attack will not fire (default)
RemembersTarget,				// If target doesn't exist, fallback on the position of last target
AcquiresNewTargets,				// If target doesn't exist, try to find a new target, otherwise will not fire
AcquiresNewTargetsAndRemembers, // If target doesn't exist, try to find a new target, otherwise fallback on the position of last target

The already existing default is RequiresTarget. Optecton uses RemembersTarget, which essentially means it will continue to dumb fire at the dead target. AcquiresNewTargets would snap to new targets and not fire after all targets are dead. Where AcquiresNewTargetsAndRemembers would do the same, but would also dumb fire at the last dead target.

Requires the following dat changes:

• Attack factor set to 10
• Attack behavior set to go to max range
• Adjust damage and/or cost, for balancing sake. This probably needs to be just a slight nudge not anything major.

Requires the following iscript changes:

OptectonGndAttkInit:
	playfram          	0x00
OptectonGndAttkRpt:
	wait				1
	nobrkcodestart
	wait				1
	playsnd				1557 # Architect charge 01
	imgol				1820 0 0 # Architect charge overlay
	wait				7
	imgol				1820 0 0 # Architect charge overlay
	wait				7
	imgol				1820 0 0 # Architect charge overlay
	wait				8
	call OptectonShoot
	call OptectonShoot
	call OptectonShoot
	call OptectonShoot
	call OptectonShoot
	call OptectonShoot
	call OptectonShoot
	call OptectonShoot
	call OptectonShoot
	call OptectonShoot
	playfram			0x260
	wait				1
	playfram			0x00
	wait				1
	nobrkcodeend
	gotorepeatattk
	ignorerest
	goto				OptectonGndAttkToIdle
	
OptectonShoot:
	playfram			0x220
	imgoluselo			1855 0 0 # Optecton muzzle flash
	playsndbtwn			2310 2313 # Optecton weapon fire 01, 02, 03, 04
	attackwith        	1
	wait				1
	playfram			0x240
	wait				1
	return