adding abilities, created skill tree template and unlock mechanics

api/app/data/abilities/smoke_bomb.yaml

@@ -0,0 +1,25 @@
+# Smoke Bomb - Assassin Shadow Dancer ability
+# Evasion buff
+
+ability_id: "smoke_bomb"
+name: "Smoke Bomb"
+description: "Throw a smoke bomb, making yourself untargetable for 1 turn"
+ability_type: "skill"
+base_power: 0
+damage_type: null
+scaling_stat: "dexterity"
+scaling_factor: 0.3
+mana_cost: 15
+cooldown: 4
+is_aoe: false
+target_count: 1
+effects_applied:
+  - effect_id: "smoke_screen"
+    name: "Smoke Screen"
+    effect_type: "buff"
+    duration: 1
+    power: 100
+    stat_affected: null
+    stacks: 1
+    max_stacks: 1
+    source: "smoke_bomb"