Legal API - Db updates for storing xml payloads

[argush3]

This ticket is used to make the necessary db updates to support store xml payloads sent to BCLaws for publishing to the gazette.

We had previously created a grouping_identifier column in the furnishings table but after some more design work, we will be removing this column in future tickets. To allow for more flexibility, we will use the new furnishing_group table to replace furnishings.grouping_identifier.

TODOs

• [x] Create alembic scripts to do the following:
  • [x] Create xml_payloads table
  • [x] Create furnishing_groups table
  • [x] Add furnishing_group_id to furnishings table
  • [x] Add required foreign keys as per db model screenshot
  • [x] Ensure upgrade/downgrade scripts are included
• [x] Create/update code models as req’d
  • [x] Add appropriate relationships so it will be easy to traverse the relationships between furnishings, furnishing_groups and xml_payloads
• [x] Add/update unit tests as appropriate

[argush3]

@vikas-gov @davemck513 I've pulled this into the sprint as Kevin needed work

[argush3]

@kzdev420 as per retro, please provide test notes for Vishnu. thanks

[vishnup0422]

Verified in Dev and the new table and column are updated.

Furnishing_groups table

furnishing_group_id column in Furnishings table