feat(ssi): multitenancy support

• Support for multitenancy
• Adds a tenantId to the events which can be used later on to see which events were triggered by which tenant
• new module for tenants (creation, etc.)
• Every event call requires a tenantId to be passed in so that tenant can be used for the specific event
• The services on top of it should provide authentication (via a JWT or something equivalent)
  • Because, if you have access to the id of the tenant (which is just a UUIDv4) you can query everything on the wallet.