Hero screens, enhancement to "click and hold and move" the mouse cursor

[LeHerosInconnu]

Preliminary checks

• [X] I've checked that there aren't other open issues on the same topic.

Describe the problem requiring a solution

In fheroes2, since it is possible to click and hold and move the mouse cursor to another location to perform an action (e.g. to split a troop into two troops by moving the mouse cursor to a free location), I suggest that when the player performs this action, by moving the mouse cursor to a troop of another type and releasing the mouse button, the two troops are swapped.

In the example, by clicking and holding on the Liches troop and moving the mouse cursor to the Phoenixes troop and releasing the mouse button, the two troops are swapped.

In fheroes2:

Describe the possible solution

Allow to "click and hold and move" the mouse cursor to a troop of another type to swap these two troops.

Additional info

No response