Add weapon data

public/data/weapons/dragon-spine.json

@@ -0,0 +1,17 @@
+{
+  "id": "dragon-spine",
+  "name": "Dragon Spine",
+  "atk": 271,
+  "crt": 16,
+  "rarity": 5,
+  "skills": [
+    {
+      "name": "Draconic Vortex",
+      "description": "[SP: 6][CD: 15] Leaps towards the target to unleash a spinning slash, dealing 600% ATK of Physical DMG to enemies in a large AOE and immobilizing them for 4.5s. During the period, the enemies also bleed, taking 240 DMG every 0.5s."
+    },
+    {
+      "name": "Blood Thirsty",
+      "description": "Every hit against a bleeding enemy heals the character for 40 HP."
+    }
+  ]
+}