Returns data about goals based on criteria. For searching, append {searchField}={searchValue} to the URL, where searchField can be any one of the lowest-level fields in dot-notation (e.g. type.params.pipeline_id; title). searchValue should be the value you are looking for on that field. Additionally, is_active=<true|false> can be provided to search for only active/inactive goals. When providing period.start, period.end must also be provided and vice versa.