chore: Add extension load points config

Signed-off-by: Mahendra Paipuri <[email protected]>

jupyter_power_usage/__init__.py

@@ -1,13 +1,17 @@
 from jupyter_server.utils import url_path_join as ujoin
 
-from ._version import __version__
+from ._version import __version__  # noqa
 from .api import ElectrictyMapsHandler
 from .api import PowerMetricHandler
 from .config import PowerUsageDisplay
 from .metrics import CpuPowerUsage
 from .metrics import GpuPowerUsage
 
 
+def _jupyter_server_extension_points():
+    return [{"module": "jupyter_power_usage"}]
+
+
 def _jupyter_labextension_paths():
     return [{"src": "labextension", "dest": "@mahendrapaipuri/jupyter-power-usage"}]