adding abilities, created skill tree template and unlock mechanics

api/app/data/abilities/smite.yaml

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+# Smite - Luminary Radiant Judgment ability
+# Holy damage attack
+
+ability_id: "smite"
+name: "Smite"
+description: "Call down holy light to smite your enemies"
+ability_type: "spell"
+base_power: 20
+damage_type: "holy"
+scaling_stat: "wisdom"
+scaling_factor: 0.5
+mana_cost: 10
+cooldown: 0
+is_aoe: false
+target_count: 1
+effects_applied: []