Add VPN setHttpProxy

https://github.com/2dust/v2rayNG/issues/4017

V2rayNG/app/src/main/java/com/v2ray/ang/service/V2RayVpnService.kt

@@ -10,6 +10,7 @@ import android.net.LocalSocketAddress
 import android.net.Network
 import android.net.NetworkCapabilities
 import android.net.NetworkRequest
+import android.net.ProxyInfo
 import android.net.VpnService
 import android.os.Build
 import android.os.ParcelFileDescriptor
@@ -190,6 +191,7 @@ class V2RayVpnService : VpnService(), ServiceControl {
 
         if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.Q) {
             builder.setMetered(false)
+            builder.setHttpProxy(ProxyInfo.buildDirectProxy(LOOPBACK, SettingsManager.getHttpPort()))
         }
 
         // Create a new interface using the builder and save the parameters.