Mailbox aliases & routing

Operations for mailbox aliases & routing.

• GETList a mailbox's aliases/api/v1/email-accounts/{account}/aliases
• GETList forwarding rules/api/v1/email-accounts/{account}/forwarding-rules
• POSTAdd an alias/api/v1/email-accounts/{account}/aliases
• POSTCreate a forwarding rule/api/v1/email-accounts/{account}/forwarding-rules
• PUTUpdate a forwarding rule/api/v1/email-accounts/{account}/forwarding-rules/{rule}
• DELETEDelete a mailbox alias/api/v1/email-accounts/{account}/aliases/{alias}
• DELETEDelete a forwarding rule/api/v1/email-accounts/{account}/forwarding-rules/{rule}
• POSTRetry provisioning an alias/api/v1/email-accounts/{account}/aliases/{alias}/retry-provisioning