chore: bump version to 1.5.0

Update productVersion from 1.0.0 to 1.5.0 in Wails project
configuration to reflect the addition of AniList watchlist sorting,
extracted refresh button component, and pagination improvements.

wails.json

@@ -12,6 +12,6 @@
   },
   "info": {
     "productName": "AniTrack",
-    "productVersion": "1.0.0"
+    "productVersion": "1.5.0"
   }
 }