Add weapon data

public/data/weapons/thunder-kikaku.json

@@ -0,0 +1,17 @@
+{
+  "id": "thunder-kikaku",
+  "name": "Thunder Kikaku",
+  "atk": 264,
+  "crt": 47,
+  "rarity": 5,
+  "skills": [
+    {
+      "name": "Will-o'-the-Wisp",
+      "description": "[SP: 12][CD: 25s] Shoots ghostfire that sticks to the target, dealing 640 Lightning DMG every 0.5s to the target and nearby enemies for 8.00s."
+    },
+    {
+      "name": "Futsuno Mitama",
+      "description": "Character gains 30% Total DMG Multiplier. Under Burst mode, enemies hit become conductive, taking 60.0% more Lightning DMG for 7s."
+    }
+  ]
+}