boxdd: Add insecure mode

experimental/boxdd/insecure_mode_stub.go

@@ -0,0 +1,16 @@
+//go:build !windows
+
+package main
+
+import "context"
+
+func registerSecurityPolicy(ctx context.Context, daemon *Daemon) {
+}
+
+func insecureModeAvailable() bool {
+	return false
+}
+
+func (d *Daemon) insecureModeEnabled() bool {
+	return false
+}