Mailbox/set delete: simple implementation

This should be a simple implementation of the deletion for `Mailbox/set`. It should follow the JMAP core specification section /set https://jmap.io/spec-core.html#set

*JSON request*

You will need to add to the existing `Mailbox/set` request the following property:

• *destroy*: `Id[]|null` A list of ids for Mailbox objects to permanently delete, or null if no objects are to be destroyed.

json
{
 "using": [ "urn:ietf:params:jmap:core", "urn:ietf:params:jmap:mail" ],
 "methodCalls": [
 [
 "Mailbox/set", 
 {
 "accountId": "JMAP-ID",
 "ifInState": "123",
 "create": null,
 "destroy": [ "0001", "0002" ]
 }
 ]
 ]
}

Notes:

• `onDestroyRemoveEmails` will be handled in #1741 . It should not be possible to delete a mailbox if it still has some emails in it for the moment, as it's the default behavior.
• we need to handle the case of deleting multiple mailboxes in one request

*JSON response*

The existing response should add the following property:

• *destroyed*: `Id[]|null` A list of Mailbox ids for records that were successfully destroyed, or null if none.

json
{
 "methodResponses": [
 [
 "Mailbox/set", 
 {
 "accountId": "JMAP-ID", // the requested accountId
 "oldState": "123",
 "newState": "124",
 "created": null,
 "destroyed": [ "0001", "0002" ]
 }
 ]
 ], 
 "sessionState": "abc"
}

Note:

• `notDestroyed` and error handling will be handled in #1742

*DoD*: unit and integration tests (memory and distributed james) + proof of deletion of multiple objects in a single request