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

data/spells/spiritual_weapon.json

@@ -5,6 +5,7 @@
   "range": "medium",
   "save": "none",
   "base_dc": 10,
+  "cast_time": "standard",
   "effects": [],
   "description": "A force weapon appears and attacks foes at a distance as you direct it (1d8 force damage +1 per three caster levels), using your base attack bonus plus Wisdom modifier, once per round on your turn for 1 round/level. No combat effect encoded: the engine has no autonomous floating-attack creature to summon, and the weapon's per-round attacks are not modeled."
 }