Tonic Structural

Added an optional parameter, preserveExistingTags, to the workspace import API endpoint. When true, the tags in the imported workspace file do not overwrite the existing tags in the target workspace for the import. The default behavior is to overwrite the existing tags with the tags from the imported file.

Before an upsert job, Structural now performs constraint validation on the destination table. This avoids potential upsert failures because of missing uniqueness or primary key constraints as well as violations of foreign key constraints for downstream tables.

Fixed an issue where some columns found by custom sensitivity rules could not be marked as not sensitive.