Adding BLB cast messaging (elanthia-online#1379)

Should be alright with bleeder use too

data/base-spells.yaml

@@ -102,6 +102,7 @@ cast_messages:
 - Using your left hand, you channel the spell's energies and gesture
 - You steeple your fingers together
 - You successfully weave the .* spell into the receptive aura of the orb
+- You swipe your fingertips
 
 khri_preps:
 - With deep breaths