Add cleanup & move projects to their own directory

- Add optional argument to clean and delete the working directories of the project before running the prompt
- Add `.gitignore` entry to ignore all possible projects
- Update readme

gpt_engineer/main.py

@@ -2,8 +2,9 @@ import os
 import json
 import pathlib
 import typer
+import shutil
+
 
-from gpt_engineer.chat_to_files import to_files
 from gpt_engineer.ai import AI
 from gpt_engineer.steps import STEPS
 from gpt_engineer.db import DB, DBs
@@ -14,7 +15,8 @@ app = typer.Typer()
 
 @app.command()
 def chat(
-    project_path: str = typer.Argument(str(pathlib.Path(os.path.curdir) / "example"), help="path"),
+    project_path: str = typer.Argument("example", help="path"),
+    delete_existing: str = typer.Argument(None, help="delete existing files"),
     run_prefix: str = typer.Option(
         "",
         help="run prefix, if you want to run multiple variants of the same project and later compare them",
@@ -24,9 +26,14 @@ def chat(
     steps_config: str = "default",
 ):
     app_dir = pathlib.Path(os.path.curdir)
-    input_path = project_path
-    memory_path = pathlib.Path(project_path) / (run_prefix + "memory")
-    workspace_path = pathlib.Path(project_path) / (run_prefix + "workspace")
+    input_path = pathlib.Path(app_dir / "projects" / project_path)
+    memory_path = input_path / (run_prefix + "memory")
+    workspace_path = input_path / (run_prefix + "workspace")
+
+    if delete_existing == 'true':
+        # Delete files and subdirectories in paths
+        shutil.rmtree(memory_path, ignore_errors=True)
+        shutil.rmtree(workspace_path, ignore_errors=True)
 
     ai = AI(
         model=model,