Add weapon data

public/data/weapons/light-and-shadow.json

@@ -0,0 +1,17 @@
+{
+  "id": "light-and-shadow",
+  "name": "Light and Shadow",
+  "atk": 270,
+  "crt": 39,
+  "rarity": 5,
+  "skills": [
+    {
+      "name": "Polar Storm",
+      "description": "[SP: 20][CD: 20s] Generates an iceball that drags away all enemies in its path. The iceball then explodes, freezing enemies within a large AOE and dealing 850 Ice DMG every 0.9s for 4.00s."
+    },
+    {
+      "name": "Coldarra",
+      "description": "When basic attack (including combo and charged attacks) breaks a shield, unleash a frosty blast, slowing Move Speed and Attack Speed of the target and nearby enemies in a small AOE by 84% for 4.00s."
+    }
+  ]
+}