The parasearch project will aim at implementing optimization procedure in rust. This will allow a fast(er) selection of parameters. Since bayesian optimization is far from being a technology, I'm concerned user may want to develop their own search logic. For this reason, I'd like to implement a new `search` subcommand in runaway. This subcomand would be used with something like: ```bash runaway search some_cluster my_script search_script.py -- --learning_rate=[0;1] --version={'a', 'b'} ``` We would provide a search script (here `search_script.py`), along with its own parameters (here `--learning_rate=[0;1] --version={'a', 'b'}`) that would be started and executed as a child process. I'm not yet sure about the way communicate between the runaway logic and the script logic.