List the online reports (Excel reports users run in Azquo) the current user can see, across every
database in the business. Read-only, no parameters. Use it to find a report's id or name before
get_report_data, read_workbook or delete_report. For the reports, setup sheets and import templates of
one database use list_database_sheets instead.
Who sees what: an administrator sees every report in the business; a developer sees the reports on
databases they own; other users see the reports on their menus.
Returns an array of reports: id, reportName (with " uploaded by <user>" appended), database (the one it
runs against; empty for reports usable with any database, "No database" when unlinked), filename,
category, explanation, dateCreated, author. A report linked to several databases appears once for each.
With none visible, a single placeholder with id 0 and reportName "No reports found" is returned.
Not paginated.