starting to implement realistic Vehicle simulation

app/tabs/__init__.py

@@ -0,0 +1,12 @@
+# =============================
+# app/tabs/__init__.py
+# =============================
+
+from __future__ import annotations
+from dataclasses import dataclass
+from typing import Protocol, Dict, Any
+
+class SimTab(Protocol):
+    frame: any
+    def save_into_config(self, out: Dict[str, Any]) -> None: ...
+    def load_from_config(self, cfg: Dict[str, Any]) -> None: ...