Refactor pmctl into new portmaster-start

cmds/portmaster-start/console_default.go

@@ -0,0 +1,12 @@
+// +build !windows
+
+package main
+
+import "os/exec"
+
+func attachToParentConsole() (attached bool, err error) {
+	return true, nil
+}
+
+func hideWindow(cmd *exec.Cmd) {
+}