fix broken scripts

This PR fixes the following scripts:

1) Scripts that can be executed within the repo's scripts directory.
   Note that these are for development testing and are not intended
   to be exposed to the user.

   configure_invokeai.py - configuration
   dream.py              - the legacy CLI
   images2prompt.py      - legacy "dream prompt" retriever
   invoke-new.py         - new nodes-based CLI
   invoke.py             - the legacy CLI under another name
   make_models_markdown_table.py - a utility used during the release/doc process
   pypi_helper.py        - another utility used during the release process
   sd-metadata.py        - retrieve JSON-formatted metadata from a PNG file

2) Scripts that are installed by pip install. They get placed into the venv's
   PATH and are intended to be the official entry points:

   invokeai-node-cli      - new nodes-based CLI
   invokeai-node-web      - new nodes-based web server
   invokeai               - legacy CLI
   invokeai-configure     - install time configuration script
   invokeai-merge         - model merging script
   invokeai-ti            - textual inversion script
   invokeai-model-install - model installer
   invokeai-update        - update script
   invokeai-metadata"     - retrieve JSON-formatted metadata from PNG files

invokeai/app/api/dependencies.py

@@ -3,7 +3,7 @@
 import os
 from argparse import Namespace
 
-from ...globals import Globals
+from ...backend import Globals
 from ..services.generate_initializer import get_generate
 from ..services.graph import GraphExecutionState
 from ..services.image_storage import DiskImageStorage

invokeai/app/api_app.py

@@ -13,7 +13,7 @@ from fastapi_events.handlers.local import local_handler
 from fastapi_events.middleware import EventHandlerASGIMiddleware
 from pydantic.schema import schema
 
-from ..args import Args
+from ..backend import Args
 from .api.dependencies import ApiDependencies
 from .api.routers import images, sessions
 from .api.sockets import SocketIO

invokeai/app/cli_app.py

@@ -18,7 +18,7 @@ from typing import (
 from pydantic import BaseModel
 from pydantic.fields import Field
 
-from ..args import Args
+from ..backend import Args
 from .invocations import *
 from .invocations.baseinvocation import BaseInvocation
 from .invocations.image import ImageField

invokeai/app/services/generate_initializer.py

@@ -6,7 +6,7 @@ from argparse import Namespace
 import invokeai.version
 from invokeai.backend import Generate, ModelManager
 
-from ...globals import Globals
+from ...backend import Globals
 
 
 # TODO: most of this code should be split into individual services as the Generate.py code is deprecated