add vCvhdr::summary_by_supplier() for /cvhdr-supplier listing
fix vCvhdr::summary_by_supplier() for /cvhdr-supplier

- add filter(cancelled = 0)
add vCvchkdtl::status_with_supplier()

- sub query for vCvhdr::summary_by_supplier (summary listing for each supplier)
fix vCvchkdtl::status_with_supplier()

- add filtering for cancelled CV (cancelled = 0)