feat: add macos container backend scaffold

bot_bottle/backend/macos_container/bottle_cleanup_plan.py

@@ -0,0 +1,27 @@
+"""Cleanup plan for the macOS Apple Container backend."""
+
+from __future__ import annotations
+
+from dataclasses import dataclass
+
+from ...log import info
+from .. import BottleCleanupPlan
+
+
+@dataclass(frozen=True)
+class MacosContainerBottleCleanupPlan(BottleCleanupPlan):
+    containers: tuple[str, ...] = ()
+    networks: tuple[str, ...] = ()
+
+    def print(self) -> None:
+        if not self.containers and not self.networks:
+            info("macos-container cleanup: nothing to remove")
+            return
+        for name in self.containers:
+            info(f"macos-container container: {name}")
+        for name in self.networks:
+            info(f"macos-container network: {name}")
+
+    @property
+    def empty(self) -> bool:
+        return not self.containers and not self.networks