Fix python version and add multi-mode files

app.py

@@ -0,0 +1,5 @@
+def main():
+    print("OpenEnv Server starting...")
+
+if __name__ == "__main__":
+    main()

pyproject.toml

@@ -7,8 +7,11 @@ name = "meta-hackathon-submission"
 version = "0.1.0"
 description = "My hackathon submission"
 readme = "README.md"
-requires-python = ">=3.9"
+requires-python = ">=3.10"
 
-# If the grader requires dependencies to be listed here instead of requirements.txt,
-# you can add them like this: ["torch", "transformers", "fastapi"] etc.
-dependencies = []
+dependencies = [
+    "openenv-core>=0.2.0"
+]
+
+[project.scripts]
+server = "server.app:main"