feat(Session): Add HookMixin

Author: tony

src/libtmux/session.py

@@ -15,6 +15,7 @@
 from libtmux.common import tmux_cmd
 from libtmux.constants import WINDOW_DIRECTION_FLAG_MAP, OptionScope, WindowDirection
 from libtmux.formats import FORMAT_SEPARATOR
+from libtmux.hooks import HookMixin
 from libtmux.neo import Obj, fetch_obj, fetch_objs
 from libtmux.options import OptionMixin
 from libtmux.pane import Pane
@@ -37,7 +38,12 @@
 
 
 @dataclasses.dataclass()
-class Session(Obj, EnvironmentMixin, OptionMixin):
+class Session(
+    Obj,
+    EnvironmentMixin,
+    OptionMixin,
+    HookMixin,
+):
     """:term:`tmux(1)` :term:`Session` [session_manual]_.
 
     Holds :class:`Window` objects.
@@ -74,6 +80,7 @@ class Session(Obj, EnvironmentMixin, OptionMixin):
     """
 
     default_option_scope: t.Optional[OptionScope] = None
+    default_hook_scope: t.Optional[OptionScope] = None
     server: "Server"
 
     def refresh(self) -> None: