Add Prototype:Unit:idle_animation

[evildogbot100]

Hello, Is it possible to add idle_animation property to Prototype:Unit? For example, Prototype:Character can have idle_animation property via armor_animation table. The way it works is by checking if speed == 0 then play idle_animation. Like usual, the type of this property is RotatedAnimation. Use cases of such interface is for example, adding a jet fighter looking units that should show jet exhaust when moving and not when idle. For my own purpose, I want to mod in starcraft dragoon looking unit where it has constantly moving part even when idle.