Separate common interfaces from client-specific classes

Changes:
- Move client-specific classes to client/src/models
- Extract common interface to standalone files in common/interfaces
- Remove unused features from client-specific classes
    - These are features which were once used on the old server, but are now no longer needed
    - Remove getObject() method for Account, Contact, and Conversation
    - Remove lookups, registrationState and registeringName from Account
    - Remove resolving logic from Contact
    - Remove requests and listeners from Conversation (once used for Socket.IO and promises on server)
- Rename services/Conversation.ts to services/conversationQueries.ts
- Update imports

Future work:
- Create interface versions of Account, Contact, and Conversation
- Create new interfaces to replace Records on server

GitLab: #94
Change-Id: Ia51fe6ebeda44a30887d851a5564569dc290e5ed
diff --git a/common/src/interfaces/websocket-interfaces.ts b/common/src/interfaces/websocket-interfaces.ts
index 155df0a..7ca0af5 100644
--- a/common/src/interfaces/websocket-interfaces.ts
+++ b/common/src/interfaces/websocket-interfaces.ts
@@ -15,7 +15,7 @@
  * License along with this program.  If not, see
  * <https://www.gnu.org/licenses/>.
  */
-import { Message } from '../Conversation.js';
+import { Message } from './message.js';
 
 export interface ContactMessage {
   contactId: string;