[#7269] Support Total Cover as an explicit attack outcome

[thatlonelybugbear]

Closes #7269

Adds explicit Total Cover handling for attack targets.

• Derived configurable cover levels from active cover statuses.
• Preserves a target’s calculated AC while identifying Total Cover separately.
• Treats Total Cover as an automatic miss, including for expanded critical-success ranges.
• Adds ignoreTotalCover for module / macro overrides.
• Expose ignoreTotalCover as a trait or item/activity Booleans

Hooks.on("dnd5e.preRollAttack", (config) => {
    config.ignoreTotalCover = true;
});
  
//or
await activity.rollAttack({ ignoreTotalCover: true });

[Kapuzenjoe]

Curious why the focus here is only on ignoreTotalCover rather than also covering Half and Three-Quarters Cover? Even though the system doesn't full automate cover in general yet, this might be a good spot to lay some groundwork for a model that could later be extended (e.g. spells like Sacred Flame ignore Half/Three-Quarters Cover but not Total Cover), so it might be worth considering a design where a single boolean isn't the only way to represent that distinction down the line.

#6369

[thatlonelybugbear]

I was mainly waiting on some feedback on how to proceed in general and what kind of automation the system wants to support.

I agree that there should be a more complete solution