adding abilities, created skill tree template and unlock mechanics

api/app/data/abilities/stampede.yaml

@@ -0,0 +1,25 @@
+# Stampede - Wildstrider Beast Companion ultimate
+# Summon beast horde AoE
+
+ability_id: "stampede"
+name: "Stampede"
+description: "Call upon the spirits of the wild to summon a stampede of beasts that tramples all enemies"
+ability_type: "skill"
+base_power: 90
+damage_type: "physical"
+scaling_stat: "wisdom"
+scaling_factor: 0.7
+mana_cost: 60
+cooldown: 6
+is_aoe: true
+target_count: 0
+effects_applied:
+  - effect_id: "trampled"
+    name: "Trampled"
+    effect_type: "debuff"
+    duration: 2
+    power: 30
+    stat_affected: null
+    stacks: 1
+    max_stacks: 1
+    source: "stampede"