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/client/src/components/ConversationsOverviewCard.tsx b/client/src/components/ConversationsOverviewCard.tsx
index 84d022d..cdc1c79 100644
--- a/client/src/components/ConversationsOverviewCard.tsx
+++ b/client/src/components/ConversationsOverviewCard.tsx
@@ -16,11 +16,11 @@
  * <https://www.gnu.org/licenses/>.
  */
 import { Card, CardActionArea, CardContent, CircularProgress, Typography } from '@mui/material';
-import { Conversation } from 'jami-web-common/dist/Conversation';
 import { useEffect, useState } from 'react';
 import { useNavigate } from 'react-router';
 
 import { useAuthContext } from '../contexts/AuthProvider';
+import { Conversation } from '../models/Conversation';
 
 export default function ConversationsOverviewCard() {
   const { axiosInstance, account } = useAuthContext();