adding abilities, created skill tree template and unlock mechanics

api/app/data/abilities/primal_fury.yaml

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+# Primal Fury - Wildstrider Beast Companion ability
+# Pet AoE attack
+
+ability_id: "primal_fury"
+name: "Primal Fury"
+description: "Command your companion to unleash a devastating attack on all enemies"
+ability_type: "skill"
+base_power: 50
+damage_type: "physical"
+scaling_stat: "wisdom"
+scaling_factor: 0.55
+mana_cost: 35
+cooldown: 4
+is_aoe: true
+target_count: 0
+effects_applied: []