Add missing shiny icons for legacy UI

This will resolve the error of the graphic being missing when loading the game.

public/images/ui/legacy/shiny_icons.json

@@ -0,0 +1,78 @@
+{
+  "textures": [
+    {
+      "image": "shiny_icons.png",
+      "format": "RGBA8888",
+      "size": {
+        "w": 15,
+        "h": 14
+      },
+      "scale": 1,
+      "frames": [
+        {
+          "filename": "0",
+          "rotated": false,
+          "trimmed": false,
+          "sourceSize": {
+            "w": 15,
+            "h": 14
+          },
+          "spriteSourceSize": {
+            "x": 0,
+            "y": 0,
+            "w": 15,
+            "h": 14
+          },
+          "frame": {
+            "x": 0,
+            "y": 0,
+            "w": 15,
+            "h": 14
+          }
+        },
+        {
+          "filename": "1",
+          "rotated": false,
+          "trimmed": false,
+          "sourceSize": {
+            "w": 15,
+            "h": 14
+          },
+          "spriteSourceSize": {
+            "x": 15,
+            "y": 0,
+            "w": 15,
+            "h": 14
+          },
+          "frame": {
+            "x": 15,
+            "y": 0,
+            "w": 15,
+            "h": 14
+          }
+        },
+        {
+          "filename": "2",
+          "rotated": false,
+          "trimmed": false,
+          "sourceSize": {
+            "w": 15,
+            "h": 14
+          },
+          "spriteSourceSize": {
+            "x": 30,
+            "y": 0,
+            "w": 15,
+            "h": 14
+          },
+          "frame": {
+            "x": 30,
+            "y": 0,
+            "w": 15,
+            "h": 14
+          }
+        }
+      ]
+    }
+  ]
+}