chore: initialize lhbfx project and documentation

backend/scripts/run_api.py

@@ -0,0 +1,14 @@
+from __future__ import annotations
+
+import uvicorn
+
+from _bootstrap import add_src_to_path
+
+
+def main() -> None:
+    add_src_to_path()
+    uvicorn.run("lhbfx.app:app", host="127.0.0.1", port=8000, reload=False)
+
+
+if __name__ == "__main__":
+    main()