Add weapon data

public/data/weapons/endergonic-tachi.json

@@ -0,0 +1,13 @@
+{
+  "id": "endergonic-tachi",
+  "name": "Endergonic Tachi",
+  "atk": 175,
+  "crt": 15,
+  "rarity": 4,
+  "skills": [
+    {
+      "name": "Energy Tide",
+      "description": "When SP is below 20% of Max SP, gain 17% Physical DMG. When SP is 80% or higher than Max SP, each attack gains 72 Fire DMG."
+    }
+  ]
+}