Add "profileRoomId" to user's profile
We need to store "profileRoomId" in user's profile data. Currently available fields in profile are "displayname" and "avatar_url". It is possible to add additional fields to Profile object. Doc for getProfile API method: "Get the combined profile information for this user. This API may be used to fetch the user's own profile information or other users; either locally or on remote homeservers. This API may return keys which are not limited to displayname or avatar_url. If server is configured as limit_profile_requests_to_users_who_share_rooms: true then response can be HTTP 403."
We need to app one more API call to set "profileRoomId", like sdk has for displayName and avatarUrl right now. API method example: PUT _matrix/client/r0/profile/{userId}/profileRoomId BODY: { "profileRoomId": "roomId" }