Allow active mutations to accept math for costs/active time, unify cost parameters about cataclysm-dda HOT 1 OPEN

Yeah, having a single cost field and then a variety of bool fields to select the type, is not optimal.

I also noticed that a few mutations have a separate ability definition for climbing which has a different, more reasonable way of specifying cost, that can also support "damage" and "pain":

{
  "type": "climbing_aid",
  "id": "ability_WEB_RAPPEL",
  "//": "Extremely safe descent regardless of height by spinning webs.",
  "copy-from": "generic_superpower",
...
    "cost": { "kcal": 87, "thirst": 10 },
...
  },
  "condition": {
    "type": "trait",
    "flag": "WEB_RAPPEL"
  }
}

I also notice that some activated mutations have EOCs that do nothing but call the EOC_GENERIC_SPELL_MUTATION with parameters for turn cost and stamina cost that in turn calls the EOC_GENERIC_SPELL_MUTATION_ACT to cast the spell. Spells can use math for calculating the cost, but the only values accepted for energy_source are MANA, BIONIC, HP, STAMINA, NONE.

My initial idea is to create a generic cost object that is like the cost object in the climbing abilities, except with some extra possible costs added, including a run_eoc field.

from cataclysm-dda.