Allow Soda Ingest DBT command to ingest custom SQL tests

[jrsalazar14]

Currently Soda is only interested on ingesting results from tests defined on the schema.yml file of DBT models. To allow Soda to also ingest custom sql tests into the Cloud would provide a lot more observability and unification for a single monitoring platform. In my case I ran dbt test --select random_model which had 27 tests assigned to it, out of which 3 were custom SQL tests. Only 24 of those tests were uploaded to Soda Cloud.

[jmarien]

SODA-1262