Modify the structure to be installable via pip.

comfyui_manager/__init__.py

@@ -0,0 +1,17 @@
+import os
+import logging
+
+def prestartup():
+    from . import prestartup_script  # noqa: F401
+    logging.info('[PRE] ComfyUI-Manager')
+
+
+def start():
+    logging.info('[START] ComfyUI-Manager')
+    from .glob import manager_server  # noqa: F401
+    from .glob import share_3rdparty  # noqa: F401
+    from .glob import cm_global       # noqa: F401
+
+    if os.environ.get('ENABLE_LEGACY_COMFYUI_MANAGER_FRONT', 'false') == 'true':
+        import nodes
+        nodes.EXTENSION_WEB_DIRS['comfyui-manager-legacy'] = os.path.join(os.path.dirname(__file__), 'js')