Add Vouching system for new users

[efonsecab]

As part of the efforts to protect users, one of the feature we will add is a Vouching system, here is how it will work.
Users will not be able to create a new account unless they have been vouched by someone who already has an account, then, a system administrator will review the vouching details and decide if the person should be allowed to join.
If new users break the platform rules, EVERYONE in the vouching chain/hierarchy, will have the account banned, this makes it so that users only vouch for persons with good intentions.

• Move the "ApplicationUserVouch" table to the "dbo" folder, make it sure to change the script schema to "dbo" to, it currently is under "FairPlayDating"
• Under the "dbo" folder, create the table "UserInvitation" with the following columns:
  • UserInvitationId
  • InvitingApplicationUserId
  • InvitedUserEmail
  • VouchingReason
  • RowCreationDateTime
  • RowCreationUser
  • SourceApplication
  • OriginatorIPAddress

Include a unique index for "InvitedUserEmail"

In the Admin Portal:

• Create a new prompt constant for "AnalyzeVouchingReason".
• Add the new prompt in the PrompEditor page

In the FairPlayDating web app

• Add a new item "Invite User" to the main menu.
• Create the respective models and services using the patterns for the AutoGenerated services code: Check of the usage of ServiceOfTAttribute.
• Include an EditForm with fields for "InvitedUserEmail" and "VouchingReason", both must be required. Reason must be a minimum of 100 characters, and maximum of 1000 characters.
• Use OpenAIService and PormptGeneratorService approach to evaluate if the provided reason makes sense, or if the users is just writing invalid / phrases that make no sense or cannot be understood.
• If the provided reason makes sense and email is valid, then create the UserInvitation, and send an email to the users, with a new unique code.