feat(update): add update deployment via web UI

- Deploy exe to alternate port 5033
- Current instance keeps running
- Add parallel mode and addr flag
- Add update panel to web UI
- Update OpenAPI spec and CLI

lib/instance/launch_stub.go

@@ -2,10 +2,8 @@
 
 package instance
 
-func Launch(exe string, args []string) error {
-	return nil
-}
+import "errors"
 
-func RestartSelf() error {
-	return nil
+func Launch(exe string, args []string) error {
+	return errors.New("launch is only supported on windows")
 }