Add a field on the node model which allows us to track the placement of the node within the building it is located on. This lets us filter out balcony installs in some queries, such as when automatically determining if a given join request can skip the panorama step of the intake proces

Possible values:

• Rooftop
• Balcony
• Window
• Indoor (Fiber Sites, non-rooftop Supernodes, etc)
• Unknown (Stored as null in the DB) (Default)

Slack ref: https://nycmesh.slack.com/archives/C06GW3Q92TY/p1743778466388549