* Add refactoring capabilities to gpt-engineer
* Improving results of refactoring
* Refactor script saves to file
* Add documentation about the new example in gpt-engineer
* Move examples to dir and fix imports
* Install erdantic and pygraphviz
* Add schema function and image
* Separate erd diagram function from example script
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Co-authored-by: Jason Liu <jxnl@users.noreply.github.com>