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>

resources/app.manifest

@@ -0,0 +1,22 @@
+<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
+<assembly xmlns="urn:schemas-microsoft-com:asm.v1" manifestVersion="1.0">
+  <assemblyIdentity
+    version="1.0.0.0"
+    processorArchitecture="*"
+    name="DriverBoosterPro"
+    type="win32"/>
+  <description>Driver Booster Pro - System Driver & Update Manager</description>
+  <trustInfo xmlns="urn:schemas-microsoft-com:asm.v3">
+    <security>
+      <requestedPrivileges>
+        <requestedExecutionLevel level="requireAdministrator" uiAccess="false"/>
+      </requestedPrivileges>
+    </security>
+  </trustInfo>
+  <compatibility xmlns="urn:schemas-microsoft-com:compatibility.v1">
+    <application>
+      <!-- Windows 10/11 -->
+      <supportedOS Id="{8e0f7a12-bfb3-4fe8-b9a5-48fd50a15a9a}"/>
+    </application>
+  </compatibility>
+</assembly>