Create Neighbour account type

As a neighbor I want to be able to
- create an account
- complete my profile
- manage my account
- add trusted neighbors to my profile
- add emergency contacts to my profile
- add a business to my profile
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- be allocated to a hood
- view my hood
- see updates in my news feed
- create open and closed groups
- join open groups
- view directories
- post help offers
- post help requests
- view support types
- customize my notifications

No files, tests, or entry points are named. Start by surveying the repository structure and any existing account or profile implementation, then clarify and split the requested neighbor capabilities into separate, testable changes before defining what done means.

Written by the indexing model from the issue text.