tailscale: Add tailssh server

protocol/tailscale/tailssh/user_android.go

@@ -0,0 +1,16 @@
+//go:build with_gvisor && android
+
+package tailssh
+
+import (
+	"github.com/sagernet/sing-box/adapter"
+	E "github.com/sagernet/sing/common/exceptions"
+)
+
+func resolveLocalUserNative(username string) (*adapter.PlatformUser, error) {
+	return nil, E.New("native user resolution not supported on android")
+}
+
+func defaultShell() string {
+	return "/system/bin/sh"
+}