Allow the ability to pass arguments that are defined in yaml, to run-operation

[binhnefits]

dbt run-operation allow us to run a custom macro and pass args. But the command can be quite long if the macro takes in a lot of arguments. It would be nice to have the ability to predefine the arguments in a yaml config and call that 'operation'.

An example config would look like

operations:
  copy_into_table_a:
    macro: copy_into
    args:
       schema: raw
       table: table_a
       src_path: s3://bucket/path

And then call it using the operation name

dbt run-operation copy_into_table_a