* Added legacy pgscatalog_utils scoring file validator to pygscatalog.validate

* Added description

* Renamed main function for consistency with other packages

* Added basic doc for pgscatalog-validate

* Added missing application pgscatalog-validate

* update ruff to ignore validate

* remove path filter

* fix ruff

* Added doc about validator installation

---------

Co-authored-by: Benjamin Wingfield <bwingfield@ebi.ac.uk>