[feature] - Register a reporter

[dave-ok]

Narrative

As an user
I want to register as a reporter with a social account
so that I can report an incident

Acceptance Criteria

• Scenario 1:
  Given an unregistered user
  When they send a request for a new registration using a social account
  And the social account is valid
  And all registration fields are present
  Then they should be registered successfully and logged in

• Scenario 2:
  Given an unregistered user
  When they send a request for a new registration using a social account
  And the account is invalid
  Then registration should fail

• Scenario 3:
  Given an unregistered user
  When they send a request for a new registration using a social account
  And the registration fields are invalid
  Then registration should fail

• Scenario 4:
  Given a registered user
  When they send a request for a new registration using their current social account
  Then they should be logged in