fix(spells): backfill casting times for all imported spells

data/spells/face_of_the_devourer.json

@@ -5,6 +5,7 @@
   "range": "touch",
   "save": "fort",
   "base_dc": 10,
+  "cast_time": "standard",
   "effects": [],
   "description": "The target's face becomes hideous: it gains a +4 circumstance bonus on Intimidate checks and, if it lacks one, a bite attack (1d6 for Medium) for 1 min/level. Fortitude negates (harmless). The skill bonus and the granted natural attack are not modeled by the engine, so the spell has no mechanical effects here."
 }