Show all mods affecting a unit in the Unit Viewer (and include them in the mod filter)

[RasmusElbaekAndersen]

Right now, the Unit Viewer lets you filter by mod, which is great for seeing what units a mod touches. However, when multiple enabled mods affect the same unit (or a character's skill tree/equipment), a unit only shows up under a single mod and it isn't obvious when viewing a unit that other mods are also modifying it.

It would be really useful if:

Selecting a unit showed a list of all enabled mods that affect it (in load order, so you can quickly see which mod is winning and which other mods also touch that unit).
Filtering by a mod in the sidebar showed all units affected by that mod, even if another mod higher in the load order also overrides the unit.

This makes it much easier to spot when multiple mods are changing the same unit or lord/hero (for example, when two mods edit the same unit's stats or a character's skill nodes) without having to dig through pack tables manually.

Here is an example mockup of how it could look on the unit card:

I had an AI slop a proto type for me. It helps me debug my mods when i encounter an error in game.