Add weapon data

public/data/weapons/zither-27s-lament.json

@@ -0,0 +1,17 @@
+{
+  "id": "zither-27s-lament",
+  "name": "Zither's Lament",
+  "atk": 296,
+  "crt": 15,
+  "rarity": 5,
+  "skills": [
+    {
+      "name": "Eastern Winds",
+      "description": "[SP: 0][CD: 20s] Deploys cross (summoned entity): Knocks down enemies in range dealing 200% ATK of Physical DMG and causing strong winds to deal 75.0% ATK of Physical DMG per 0.25s to enemies and slow their Move Speed by 30% for 8s. Boosts team Move Speed by 25% and Physical DMG by 15.0% for 13s."
+    },
+    {
+      "name": "Empty Fort",
+      "description": "All team members' Ultimate and Burst mode attacks deal 15.0% more Physical DMG (this effect cannot stack). When equipped by Starlit Astrologos, she additionally gains 20% ATK Speed."
+    }
+  ]
+}