Fix havesnapshot

main.py

@@ -111,6 +111,10 @@ async def fastapi_execute_compressed_batch_commands(network: str, req: Request)-
     cs.operations = jo_root['operations']
     return execute_batch_command(network, cs)
 
+@app.get("/havesnapshot/")
+async def fastapi_has_snapeshot(network: str, snapshot: str)-> int:
+    return have_snapshot(network, snapshot)
+
 @app.post("/takesnapshot/")
 async def fastapi_take_snapeshot(network: str, snapshot: str)-> int:
     return take_snapshot(network, snapshot)