add shortcut for panel zoom

wezterm.lua

@@ -83,6 +83,11 @@ config.keys = {
 		mods = "ALT",
 		action = act.CloseCurrentPane({ confirm = false }),
 	},
+	{
+		key = "z",
+		mods = "ALT",
+		action = wezterm.action.TogglePaneZoomState,
+	},
 }
 
 return config