Better interface for "Improved Secondary Battery Aiming"

[Alloh]

The current implementation of "Improved Secondary Battery Aiming" requires the player to Ctrl-Click on ships' tag to enable / select target manually.

That's not logical, and inconsistent with remaining interface. 

Instead, I propose to use key "4" to enable this ability, then you "shoot" a ship to "lock target" so the secondaries gets the buff. Should be enabled in "Free view" mode as AA ability currently do.

The same implementation should be done to dual-purpose turrets, including DD's main batteries: To enable "AA mode" Primary/Secondaries, player press "4" (or 5) then "shoot" in direction of planes. And this new "AA mode" is cancelled both by timeout, or if player selects 1 or 2 (HE/AP) and (AIM? shoot?) a ship or land target.

So if you select "weapon 4" and "shoot" at ships, secondaries focus at that ship, while if you "shoot high" in planes' direction, you focus all main/secondaries/AA guns in those planes.

This would result in a much more consistent controls implementation of an "attack feature":

Key	Action / weapon
1	HE/SAP
2	AP
3	Torpedos
4	Improved Secondaries Aiming (AA mode if planes)
5	AA mode (separated)

Of course keys can be remapped, keeping that out for clarity sake.

[Alloh]

More clarifications:

• What changes:
  • Player select "4", then click/shoot near a ship to engage aim lock. The weapon "4" shall work exactly as currently "Ctrl-Click on ship's tag health bar"
  • Aiming does not have to be precise, even more slack if without zoom. Click/shoot "NEAR" target is enough.
  • Shoot "high" to engage AA against planes in that sector. To aim high, on most ships, is required to zoom out. Freelook is the quick way to do so.
• What does NOT change
  • The lock duration remains as is now, i.e. "forever" until ship is killed or player select another ship. No use to "shoot again" on same target. 
  • Secondaries/AA aim lock does not interfere with main gun position. Player can shoot primary left while lock aim for AA/2nd to the right. Just use "Freelook" key.
  • AA sector remains 180º to one side of ship. I would love to see 4x90º, or a 90º sector around aim direction implementation later.
  • All buffs remains as-is.  
• Desired Improvements, maybe later
  • Moderate buff to Secondaries when the cmdr does not have the related Skill. Big enough to make it visible, small enough to make you desire to get the skill.
  • for AA, using "O" gives 180º, using "5+Shoot Planes" gives 90º sector thus better AA buff.