Set up data model

[Marinus van Velzen]

The project requires the following tables:

• Tenants (used to store external sites)
  • Tenant ID
  • Tenant name
  • Tenant slug
  • websiteUrl
• Transactions (contains calculated co2 usage)
  • Transaction ID
  • Tenant ID FK
  • Account ID FK (optioneel)
• Accounts (possibly contains user information)
  • Account ID
  • Email hash (unique)

All models must have an UUID as the ID