Fixed import issue in invokeai/frontend/install/model_install.py (#4259)

This fixes an import issue introduced in commit 1bfe983. The change made
'invokeai_configure' into a module but this line still tries to call it
as if it's a function. This will result in a `'module' not callable`
error.

## What type of PR is this? (check all applicable)

- [ ] Refactor
- [ ] Feature
- [x] Bug Fix
- [ ] Optimization
- [ ] Documentation Update
- [ ] Community Node Submission


## Have you discussed this change with the InvokeAI team?
- [x] Yes
- [ ] No, because:

      
## Have you updated all relevant documentation?
- [ ] Yes
- [x] No


## Description

imic from discord ask that I submit a PR to fix this bug.

## Related Tickets & Documents

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- Related Issue #
- Closes #

## QA Instructions, Screenshots, Recordings

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## Added/updated tests?

- [ ] Yes
- [ ] No : _please replace this line with details on why tests
      have not been included_

## [optional] Are there any post deployment tasks we need to perform?

invokeai/frontend/install/model_install.py

@@ -775,7 +775,7 @@ def main():
 
     if not config.model_conf_path.exists():
         logger.info("Your InvokeAI root directory is not set up. Calling invokeai-configure.")
-        from invokeai.frontend.install import invokeai_configure
+        from invokeai.frontend.install.invokeai_configure import invokeai_configure
 
         invokeai_configure()
         sys.exit(0)

scripts/configure_invokeai.py

@@ -2,7 +2,7 @@
 # Copyright (c) 2022 Lincoln D. Stein (https://github.com/lstein)
 
 import warnings
-from invokeai.frontend.install import invokeai_configure as configure
+from invokeai.frontend.install.invokeai_configure import invokeai_configure as configure
 
 if __name__ == "__main__":
     warnings.warn("configure_invokeai.py is deprecated, running 'invokeai-configure'...", DeprecationWarning)