Allow AI and observers to see electrified doors

[slarticodefast]

About the PR

Adds a HUD showing electrification status of doors. Can be given to any mob by adding ShowElectrocutionHUDComponent.
For now I added it only to the AI and observers, but it could be easily extended to include borgs and the diagnostics HUD as well.

Why / Balance

I recently played on tg and they have this. It makes is easier for the AI to see which doors are currently electrified without having to check every single one of them.

Technical details

The sprite is a simple layer on the electrified entity, so this could easily be extended to any other objects with ElectrifiedComponent.

This works a little like a mix of an overlay and normal VisualizerSystem. We add a new layer to the electrified entity, which is hidden by default. If the electrification status is changed and the client's current player mob has the ShowElectrificationHUDComponent the layer will be toggled. To handle adding/removing the component or switching mobs, we search for all currently existing electrifyable entities and toggle the layer if neccessary.

For sanity reasons I renamed the ElectrifiedVisuals.IsPowered enum entry to ShowSparks because the old name was a total lie and had nothing to do with the entity being powered, but instead is true for a few seconds when zapping someone, which is used for chain fences to show electric sparks. A new entry Electrified has been added to the enum for storing the electrification status of the entity.

Removed some sprite layers from AirlockShuttle because those were inherited anyways.

The sprite for the HUD was ported from tg, I also ported over apc_hacked.png from the same dmi file since that can likely be used later for another AI HUD.

Media

electrified.hud.small.mp4

Requirements

• I have read and am following the Pull Request and Changelog Guidelines.
• I have added media to this PR or it does not require an ingame showcase.

Breaking changes

Renamed enum.ElectrifiedVisuals.IsPowered to enum.ElectrifiedVisuals.ShowSparks.
Renamed enum.ElectrifiedLayers.Powered to enum.ElectrifiedLayers.Sparks.

Changelog
🆑

• add: The AI and observers can now see if doors are electrified.

[github-actions]

RSI Diff Bot; head commit de51690 merging into 09ca45a
This PR makes changes to 1 or more RSIs. Here is a summary of all changes:

Resources/Textures/Interface/Misc/ai_hud.rsi

State	Old	New	Status
apc_hacked			Added
electrified			Added

Edit: diff updated after de51690