Add weapon data

public/data/weapons/blood-dance.json

@@ -0,0 +1,17 @@
+{
+  "id": "blood-dance",
+  "name": "Blood Dance",
+  "atk": 289,
+  "crt": 17,
+  "rarity": 5,
+  "skills": [
+    {
+      "name": "Blood Rage",
+      "description": "[SP: 20][CD: 15s] Creates a blood tornado that sweeps away enemies, dealing 9x35% ATK of Physical DMG and sending them into a Blood Rage, doubling their Attack Speed but making them take 60% more Elemental DMG. The Blood Rage lasts for 9.00s."
+    },
+    {
+      "name": "Blood Revival",
+      "description": "Combo Hit Count exceeds 15, gain 30% Physical DMG. When undeployed, heal 30.0 HP every 0.5s if HP is below 50%."
+    }
+  ]
+}