As of Cosmos 1.0.0, `LoadMode.DBT_LS` ran `dbt ls` from within the original dbt project directory.

The `dbt ls` outputs files to the directory it's running from unless the environment variables `DBT_LOG_PATH` and `DBT_TARGET_PATH` are specified.

Depending on the deployment, the Airflow worker does not have write permissions to the dbt project directory. This PR changes the behavior of `dbt ls` to make a copy of the original project directory into a temporary directory and run the command `dbt ls` from there.

Closes: #411

…a separate dir

Unfortunately this does not work in dbt 1.5 or previous versions