Add weapon data

public/data/weapons/light-string.json

@@ -0,0 +1,13 @@
+{
+  "id": "light-string",
+  "name": "Light String",
+  "atk": 127,
+  "crt": 7,
+  "rarity": 3,
+  "skills": [
+    {
+      "name": "Rapid Shot",
+      "description": "[SP: 0][CD: 0] Use the bow to aim and shoot (max aiming duration: 3s), dealing 450.0% ATK of Physical DMG. Hitting an enemy weakspot creates an explosion dealing 650.0% ATK of Physical DMG. The weapon active's CD and charging time are based on the shooting mode."
+    }
+  ]
+}