* Add new programmatic description nodes.
Currently only tested on tables.

Fixing the neo4j nodes to have unquoted suffix where applicable
Differentiating between normal description and programmatic description nodes for practical purposes
Refactored Description relation creation to the DescriptionMetadata object itself

* Adding a todo describing desired goal in table metadata object

* Removing description order which is now handled exclusively by frontend.
Removed column programmatic description as I think column stats will work for this use case, or if not, we can add at a later time.

Added a couple of comments and removed TODO

Fixing flake8 style issues

* Removing is_editable
Added another test table to sample data

Fixes from code review.
Adding default argument to source.
Adding type comment
Changing node key of the programmatic description
Modifying doc string comment
fixing new test that relies on description text

* cleaning up sample data loader given that standalone column was retired.

* incrementing minor version by 1