feat: implement native USB passthrough using Hyper-V sockets

Implements a robust USB device passthrough solution for WSL2 that uses
Hyper-V sockets instead of IP networking, eliminating issues with VPNs,
network configuration changes, and gateway instability.

This solution provides three main components:

1. Windows USB Service (usbservice.cpp/hpp)
   - Enumerates USB devices using Windows Setup API
   - Manages device attachment/detachment over Hyper-V socket
   - Forwards USB Request Blocks (URBs) between host and guest

2. Linux Kernel Module (wsl_usb.c)
   - Implements USB Host Controller Driver (HCD) interface
   - Receives USB traffic over AF_VSOCK
   - Emulates USB devices in Linux guest

3. WSL CLI Commands (usbclient.cpp/hpp)
   - wsl --usb-list: List available USB devices
   - wsl --usb-attach <device>: Attach USB device to WSL
   - wsl --usb-detach <device>: Detach USB device from WSL

The implementation uses a binary protocol over Hyper-V sockets (port
0x5553422) with message types for device enumeration, attachment,
detachment, and URB forwarding. This provides network-independent USB
passthrough that works reliably with any host networking configuration.

Benefits:
- No dependency on IP networking or gateway addresses
- Works with VPNs and complex network configurations
- Native WSL integration, no third-party tools required
- Simple user experience with intuitive CLI commands
- Better performance without IP stack overhead

Closes [#13421](https://github.com/obrobrio2000/WSL/issues/13421)

Signed-off-by: Giovanni Magliocchetti <[email protected]>

Author: obrobrio2000

drivers/usb/Kconfig

@@ -109,6 +109,8 @@ source "drivers/usb/image/Kconfig"
 
 source "drivers/usb/usbip/Kconfig"
 
+source "drivers/usb/wsl/Kconfig"
+
 endif
 
 comment "USB dual-mode controller drivers"

drivers/usb/Makefile

@@ -47,6 +47,8 @@ obj-$(CONFIG_USB_TMC)		+= class/
 obj-$(CONFIG_USB_STORAGE)	+= storage/
 obj-$(CONFIG_USB)		+= storage/
 
+obj-$(CONFIG_USB_WSL)		+= wsl/
+
 obj-$(CONFIG_USB_MDC800)	+= image/
 obj-$(CONFIG_USB_MICROTEK)	+= image/
 

drivers/usb/wsl/Kconfig

@@ -0,0 +1,17 @@
+# SPDX-License-Identifier: GPL-2.0
+
+config USB_WSL
+	tristate "WSL USB Passthrough Support"
+	depends on USB && HYPERV && VSOCKETS
+	help
+	  This driver provides USB device passthrough for WSL2 over Hyper-V
+	  sockets. It enables USB devices connected to the Windows host to
+	  be used in the Linux guest without relying on IP networking (usbip).
+
+	  This is a more robust alternative to usbip that works regardless of
+	  VPN configurations, network changes, or complex networking setups.
+
+	  To compile this driver as a module, choose M here: the module
+	  will be called wsl_usb.
+
+	  If unsure, say N.

drivers/usb/wsl/Makefile

@@ -0,0 +1,8 @@
+# SPDX-License-Identifier: GPL-2.0
+#
+# Makefile for WSL USB passthrough driver
+#
+
+obj-$(CONFIG_USB_WSL) += wsl_usb.o
+
+wsl_usb-y := wsl_usb.o