Add support on knex adapter to passe tableOptions on the Knex builder in order to support the option ONLY that discard the inheriting tables - For PostgreSQL only

Today the feathesjs-knex package was not able to pass the option:

{
  only: true
}

Here is the knex doc: https://knexjs.org/guide/query-builder.html#common

I propose a new knex specific adapter option called: tableOptions to be used on the getOptions method of the service class.

this can be passed on the db method on the knex adapter and therfore to the

Model(name, tableOptions)