Add app icon (shield + circuit + arrow) and embed in exe

- Generate app icon via AI image gen (shield with circuit board + arrow)
- Convert to .ico with 256/128/64/48/32/16px sizes via ImageMagick
- Create winres config with IMTAQIN company info, version 1.0.0
- Embed icon + manifest + version info into exe via go-winres
- Add 48px icon-app.png for UI title bar
- exe now shows custom icon in taskbar, explorer, and title bar

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

winres/winres.json

@@ -0,0 +1,47 @@
+{
+  "RT_GROUP_ICON": {
+    "APP": {
+      "0000": [
+        "icon.png",
+        "icon16.png"
+      ]
+    }
+  },
+  "RT_MANIFEST": {
+    "#1": {
+      "0409": {
+        "identity": {
+          "name": "IMTAQIN.DriverBoosterPro",
+          "version": "1.0.0.0"
+        },
+        "description": "Driver Booster Pro - System Driver & Update Manager",
+        "minimum-os": "win10",
+        "execution-level": "as invoker",
+        "dpi-awareness": "per monitor v2",
+        "use-common-controls-v6": true
+      }
+    }
+  },
+  "RT_VERSION": {
+    "#1": {
+      "0000": {
+        "fixed": {
+          "file_version": "1.0.0.0",
+          "product_version": "1.0.0.0"
+        },
+        "info": {
+          "0409": {
+            "CompanyName": "IMTAQIN",
+            "FileDescription": "Driver Booster Pro",
+            "FileVersion": "1.0.0.0",
+            "InternalName": "driver-booster",
+            "LegalCopyright": "Copyright (c) 2026 IMTAQIN - https://imtaqin.id",
+            "OriginalFilename": "driver-booster.exe",
+            "ProductName": "Driver Booster Pro",
+            "ProductVersion": "1.0.0.0"
+          }
+        }
+      }
+    }
+  }
+}