adding abilities, created skill tree template and unlock mechanics

api/app/data/abilities/hammer_of_justice.yaml

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+# Hammer of Justice - Luminary Radiant Judgment ability
+# Holy damage + stun
+
+ability_id: "hammer_of_justice"
+name: "Hammer of Justice"
+description: "Smash your enemy with a divine hammer, dealing holy damage and stunning them"
+ability_type: "spell"
+base_power: 55
+damage_type: "holy"
+scaling_stat: "wisdom"
+scaling_factor: 0.6
+mana_cost: 38
+cooldown: 4
+is_aoe: false
+target_count: 1
+effects_applied:
+  - effect_id: "justice_stun"
+    name: "Judged"
+    effect_type: "stun"
+    duration: 2
+    power: 0
+    stat_affected: null
+    stacks: 1
+    max_stacks: 1
+    source: "hammer_of_justice"