Revenant Rework

[TGRCdev]

This is an issue I will be using to organize my thoughts and plans for revenants, and to gather feedback.

The revenant antagonist has been half-baked for a while, never appearing as more than an annoyance to the crew. It's especially bizarre when you consider that ninjas have a 50/50 chance to summon a dragon instead of a revenant, which has a FAR more disruptive effect on the shift. I am basing most of these changes on the goonstation wraith.

Note: My classes have begun, so I may not get around to completing this for a while. If anyone wants to make changes to revenant code, feel free to ask me questions in the discord.

Implemented:

• Revenant blood writing #244
• Added the revenant Animate action #247
• Revenants enter stasis on death #262
• Salt can reveal revenants #278
• Added the revenant Haunt action #293
• Freeze revenants in place during stun and prevent haunting the same person twice #420

Planned:

• Make salt lines placeable in a way similar to cables, and have running over them potentially break them

Other Planned Changes:

• Animated barber's scissors will give random haircuts

[Darkmajia]

i feel like this fits better as a comment here than as its own issue:
if a revenant is moving before using an ability, it keeps moving during the ability's use. this makes them incredibly hard to deal with if exploited. i've been both the victim and user of this and it's really evil & messed up & kinda mean

[TGRCdev]

Oh, that must be how revenants are haunting rooms and somehow disappearing. That'd be a good thing to fix.