Move some Meg/Olm session logic from Room::Private to Connection::Private

Functions (Room::Private::)createOlmSession, payloadForUserDevice
and sendRoomKeyToDevices don't have a lot to do with the given Room
object but deal with quite a few things stored in Connection. This
commit moves them to Connection::Private, exposing
sendSessionKeyToDevices (the new name for sendRoomKeyToDevices) in
Connection so that Room could call it from Room::P::sendMegolmSession().

While moving these over, a few additional things were adjusted:
- more functions marked as const
- a few functions could be moved now from Connection
  to Connection::Private
- false slots in Connection (such as picklingMode) are moved out of
  the slots block
- keys.yml in Matrix CS API definitions has been adjusted to match
  the real structure of `/claim` response (see quotient-im/matrix-spec
  repo); csapi/keys.h has been regenerated accordingly.

1 files changed, 3 insertions, 1 deletions

diff --git a/lib/events/roomkeyevent.h b/lib/events/roomkeyevent.h
index 2bda3086..3093db41 100644
--- a/lib/events/roomkeyevent.h
+++ b/lib/events/roomkeyevent.h
@@ -12,7 +12,9 @@ public:
     DEFINE_EVENT_TYPEID("m.room_key", RoomKeyEvent)
 
     explicit RoomKeyEvent(const QJsonObject& obj);
-    explicit RoomKeyEvent(const QString& algorithm, const QString& roomId, const QString &sessionId, const QString& sessionKey, const QString& senderId);
+    explicit RoomKeyEvent(const QString& algorithm, const QString& roomId,
+                          const QString& sessionId, const QString& sessionKey,
+                          const QString& senderId);
 
     QString algorithm() const { return contentPart<QString>("algorithm"_ls); }
     QString roomId() const { return contentPart<QString>(RoomIdKeyL); }