feat: add "new()" command to create new dock area windows from client

bec_widgets/cli/client_utils.py

@@ -444,6 +444,12 @@ class BECGuiClient(RPCBase):
         with wait_for_server(self):
             return client.BECDockArea(gui_id=self._gui_id)
 
+    def new(self, name):
+        """Ask main window to create a new top-level dock area"""
+        with wait_for_server(self):
+            rpc_client = RPCBase(gui_id=f"{self._gui_id}:window", parent=self)
+            return rpc_client._run_rpc("new_dock_area", name)
+
     def close(self) -> None:
         """
         Close the gui window.

bec_widgets/widgets/containers/main_window/main_window.py

@@ -1,9 +1,17 @@
 from qtpy.QtWidgets import QMainWindow
 
 from bec_widgets.utils import BECConnector
+from bec_widgets.widgets.containers.dock.dock_area import BECDockArea
 
 
 class BECMainWindow(QMainWindow, BECConnector):
     def __init__(self, *args, **kwargs):
         BECConnector.__init__(self, **kwargs)
         QMainWindow.__init__(self, *args, **kwargs)
+
+    def new_dock_area(self, name):
+        dock_area = BECDockArea()
+        dock_area.resize(dock_area.minimumSizeHint())
+        dock_area.window().setWindowTitle(name)
+        dock_area.show()
+        return dock_area