[Push] Implement JMAP email push specification (Firebase)

[Arsnael]

Modify the current implem of Firebase jmap push to align with the new jmap email push spec defined here: https://datatracker.ietf.org/doc/draft-ietf-jmap-emailpush/

After implementing the data encryption part (see #2303 ), we would remain the EmailPush part:

{
  "using": [
    "urn:ietf:params:jmap:core",
    "com:linagora:params:jmap:firebase:push"],
  "methodCalls": [[
        "FirebaseRegistration/set",
        {
            "create": {
                "4f29": {
                  "deviceClientId": "a889-ffea-910",
                  "token": "token1",
                  "types": ["Mailbox"],
                  "keys": {
                     "p256dh": "BM0HH37xD8sEh8NeiHu1hFuwxqeeruxPlX5S7XGWGjHY5UT5yZFQKAiihFQLP6GuEQPQOtD9z28HRyV7e1nndh8",
                     "auth": "uwPFKACOLBipGPTVz4UCDg"
                   },
                   "emailPush": {
                   "A1412": {
                     "filter": {
                       "operator": "OR",
                       "conditions": [
                         { "inMailbox": "674cc240-95db-49ce-a8a2-054f4f733095" },
                         { "hasKeyword": "$notify" }
                       ]
                     },
                     "properties": ["from", "subject", "id"]
                   }
                }
              }
        },
    "c1"]]
}

[Arsnael]

Should we open a ticket to implement the spec for james too or not?

[coderabbitai]

🔗 Related PRs

#2071 - ENHANCEMENT Log user upon unexpected FCM errors [merged]
#2098 - Fcm log enhancements [merged]
#2128 - Document email retrieval and label setting with JMAP [merged]

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