Create new DB table to store 'new' and 'bad' geoms

[spwoodcock]

Is your feature request related to a problem? Please describe.

• When a new geometry is mapped (submission made), its not displayed on the map.
• When a geom is marked bad, its hidden within the task. You have to click the task to see bad geom.

Describe the solution you'd like
A clear and concise description of what you want to happen.

• Database table recording new and bad geoms.
• Synced to user via electric.
• Bad geoms displayed flashing on top of the map.
• New geoms displayed either on top, or when you click a task area only?

Describe alternatives you've considered

• Ideally we could add new geoms to the entity list. Does this work currently?
• Will there be issues if its a different geometry type to the other geoms (collecting a point in a building entity list)?
• However this would mean the user has to refresh the page to view new geoms, plus we don't have a nice way to do this currently anyway. Loading geoms is based on the flatgeobuf, then entity properties are mapped to the geometries by id.
• Using a new db table opens the possibility for real time sync of new geoms.