[Unknown Mod][Combat] Option to control the Ballista and the Turrets during combat

[LeHerosInconnu]

Add an option to control the Ballista and the Turrets during combat:

"Battle: allows to control Ballista and Turrets during combat"

When the Ballista and the Turret(s) has to shoot, this is visually indicated to the player.
The player selects the target by moving the mouse cursor over the target.
The selected target is visually indicated to the player (as for the shot of a troop of ranged units).
The player left-clicks on the target to activate the shot.

The player chooses the target for each shot.
The chosen target is always hit (there is no percentage of success).

The hero does not need to have a secondary skill to be able to control the Ballista and the Turret(s).
The player controls the Ballista and the Turret(s) in all cases when the option is activated.

Edit 2021/02/11.

When the Ballista and the Turret(s) has to shoot, the hero cannot cast a spell.
The hero can cast a spell only when he controls the troop that has the hand whether it is an allied troop or an opposing troop (for example under the influence of the Hypnotize spell).

The player can skip the turn of the Ballista and the Turret(s) (do not shoot).

In all cases, it is not possible to cast a spell on the Ballista and the Turret(s), except the Earthquake spell.