Added CustomerEmailTokenCreated and CustomerPasswordTokenCreated Messages

You can now subscribe to Messages for email verification and password reset tokens of Customers.

Changes:

• [API] Added CustomerEmailTokenCreated Message.
• [API] Added CustomerPasswordTokenCreated Message.
• [GraphQL API] Added the following types to the GraphQL schema: CustomerEmailTokenCreated, CustomerPasswordTokenCreated.

The following changes were introduced in terms of GraphQL SDL:

type CustomerEmailTokenCreated implements MessagePayload {
  customerId: String!
  expiresAt: DateTime!
  type: String!
}

type CustomerPasswordTokenCreated implements MessagePayload {
  customerId: String!
  expiresAt: DateTime!
  type: String!
}