Add admin action to post to multiple Panorama Public submission request message threads

[vagisha]

Rationale

Due to the change in password policy, after upgrading PanoramaWeb to 24.3, we need to notify submitters of private Panorama Public datasets that the reviewer account passwords assigned to their data will no longer be valid. We would like to notify them by posting to the secure message thread that gets created when a dataset is submitted to Panorama Public. The data submitter and lab head are on the notify list of the message thread for their data.

Changes

• Added an admin console action that will allow site admins to post to multiple Panorama Public submission request message threads.
• Added a form where site admins can enter a title and message (in Markdown syntax), and filter and select from the list of datasets on Panorama Public where the message should be posted.
• Added a pipeline job to post the message to the selected experiments' message threads.
• "Support Message" column was added to the ExperimentAnnotationsTableInfo so that site admins can easily navigate to the message thread for a dataset.
• Removed old, unused admin action AssignSubmitterPermissionAction and related pipeline job.

Form screenshot: