fix: speed up initial import times using lazy import (from bec_lib)

bec_widgets/cli/server.py

@@ -3,8 +3,8 @@ import threading
 import time
 from typing import Literal, Union
 
-from bec_lib import messages
 from bec_lib.endpoints import MessageEndpoints
+from bec_lib.utils.import_utils import lazy_import
 from qtpy.QtCore import QTimer
 
 from bec_widgets.cli.rpc_register import RPCRegister
@@ -14,6 +14,8 @@ from bec_widgets.widgets.dock.dock_area import BECDockArea
 from bec_widgets.widgets.figure import BECFigure
 from bec_widgets.widgets.plots import BECCurve, BECImageShow, BECWaveform
 
+messages = lazy_import("bec_lib.messages")
+
 
 class BECWidgetsCLIServer:
     WIDGETS = [BECWaveform, BECFigure, BECCurve, BECImageShow]