simplify wx-78's shadow affinity

[BoomRx]

The improvements granted by the old shadow affinity felt better. I liked the theme of the chassis corrupted by shadows, but I also like that they've extended that theme to more drones.

My idea is that they keep the old mechanics but have them provided by the drones. Instead of crafting drones, they would be generated by wx-78 upon insertion of a new heart. These could be:

- Shadow Heart (Telltale Heart + Nightmare Fuel) (recipe unlocked with Affinity)
- Pure Horror Heart (Telltale Heart + Pure Horror) (recipe unlocked with Affinity)
- Shadow Atrium
- Possessed Shadow Atrium

The generated drone and its functionalities vary depending on which heart is inserted, but essentially they would be the same: harvest/harvest + gathering/damage buff/harvest + gathering + damage buff

The drone would remain orbiting over wx-78 at all times, and would perform tasks by summoning small shadows while continuing to orbit, or by generating a shadow over nearby enemies that buffs wx-78's damage (like Abigail).

I think keeping the mechanics simple allows people who aren't keen on the complexities of setting up the Lunar Affinity to play the character.
Having the drone perform tasks through shadows it summons instead of the drone itself could make the gameplay less tedious.

A Nightmare fuel load could also be implemented for the WX-78, which would need to be recharged to keep the drone operational.