[Magiclysm] Move bulk of spellcasting proficiency processing to dedic…

…ated EoCs and out of spell JSON (Kelvinist/Magus edition) (#76242)

* Kelvinism

* Magus spells

* Fix missing druid spell

data/mods/Magiclysm/Spells/druid.json

@@ -1181,7 +1181,7 @@
     "name": "Aquatic Mantle",
     "description": "Cover yourself in a thin layer of magical seaweed, preventing you from getting wet and allowing you to breathe underwater.",
     "valid_targets": [ "self" ],
-    "flags": [ "CONCENTRATE", "VERBAL", "SOMATIC", "NO_LEGS" ],
+    "flags": [ "ENHANCEMENT_SPELL", "CONCENTRATE", "VERBAL", "SOMATIC", "NO_LEGS" ],
     "min_damage": 1,
     "max_damage": 1,
     "effect": "spawn_item",