JMAP Email/query Allow listing email

Simple implementation without filters/sorting/pagination

Why

With the new specification, I should be able to list my emails:

[[ "Email/query",

Unknown macro: { "accountId"}

, "0" ]]

Should return :

[[ "Email/query",
Unknown macro: { "accountId"}
, "0" ]]

HOW

1. Implement a method for Email/query
2.  Write dedicated integration tests for it.

NOTE

Even without sorting the order of the elements should be stable between two calls to the method.
The default sorting order will be the default used by james i.e by ascending order of message uids

DOD

Write memory integration tests for Email/query