metadata.tag_id incorrectly mimics metadata.submission_id

[lewismc]

Jesus reported the following...

Hi everyone, I have done some quick load tests and noticed this. The tag_id in the METADATA table does not match the tag_id in the submission table. In the submission table the same id is assigned ( if it is the same name) but in the metadata table they are still correlative. I will have to check if this happens in the other tables.

[lewismc]

Actually, in my local testing when I reverted processing_utils.py to it's previous state and run some ingestion tasks I still observe metadata.tag_id incrementing inline with the submission_id. This makes me think that this bug has been there longer and just not been caught until now.
The SQL INSERT statement can be seen at https://github.com/tagbase/tagbase-server/blob/main/tagbase_server/tagbase_server/utils/processing_utils.py#L214-L223
As you can see we use the submission_id instead of the tag_id. We need to acquire the tag_id from earlier ingestion logic. Probably from obtaining curval for the tag_id sequence.