Add weapon data

public/data/weapons/nebulous-duality.json

@@ -0,0 +1,17 @@
+{
+  "id": "nebulous-duality",
+  "name": "Nebulous Duality",
+  "atk": 294,
+  "crt": 16,
+  "rarity": 5,
+  "skills": [
+    {
+      "name": "Well of Yin",
+      "description": "[SP:25][CD:24s] The wielder gains Ignore Interrupt and 10% ATK Speed for 10s, during which she restores 3.00 SP but loses 1% of her current HP per 0.5s. If wielded by Azure Empyrea, the protective effect of her Evasion skill will be reset immediately."
+    },
+    {
+      "name": "Fount of Yang",
+      "description": "Fu Hua equip bonus: Hitting an enemy with the final hit of any set of her combos boosts her Total DMG by 6.0% for 15s (stacks up to 3 times) and adds 1 charge (MAX: 3). This effect can be triggered once every 2s; triggering it again reset the duration. When the wielder leaves the battlefield, each charge boosts teammates' Total DMG by 4.0% for 15s (triggering this effect again resets the duration), then all charges will be removed."
+    }
+  ]
+}