adding abilities, created skill tree template and unlock mechanics

api/app/data/abilities/reality_shift.yaml

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+# Reality Shift - Lorekeeper Arcane Weaving ultimate
+# Massive buff allies + debuff enemies
+
+ability_id: "reality_shift"
+name: "Reality Shift"
+description: "Alter reality itself, greatly empowering allies while weakening all enemies"
+ability_type: "spell"
+base_power: 0
+damage_type: "arcane"
+scaling_stat: "intelligence"
+scaling_factor: 0.7
+mana_cost: 70
+cooldown: 8
+is_aoe: true
+target_count: 0
+effects_applied:
+  - effect_id: "reality_empowered"
+    name: "Reality Empowered"
+    effect_type: "buff"
+    duration: 5
+    power: 30
+    stat_affected: null
+    stacks: 1
+    max_stacks: 1
+    source: "reality_shift"
+  - effect_id: "reality_weakened"
+    name: "Reality Distorted"
+    effect_type: "debuff"
+    duration: 5
+    power: 30
+    stat_affected: null
+    stacks: 1
+    max_stacks: 1
+    source: "reality_shift"