Add conversation requests list

- Add routes to REST API for conversation requests
- Add websocket notification on new conversation requests. This is unreliable.
- Rename 'ColoredCallButton' as 'ColoredRoundButton' and move it to Buttons file for reuse
- Review logic to show conversation tabs
- Add useConversationDisplayNameShort for conversations' names in lists. Will need more work.
- Add hooks to help managing React Query's cache
- Use React Query to remove conversations and update the cache doing so.
- Add ContactService and ConversationService as a way to group reusable functions for the server. This is inspired by jami-android

Known bug: The server often freezes on getContactFromUri (in ContactService) when a new conversation request is received.

Change-Id: I46a60a401f09c3941c864afcdb2625b5fcfe054a
diff --git a/server/src/jamid/conversation-request-metadata.ts b/server/src/jamid/conversation-request-metadata.ts
index d6c187b..28f6208 100644
--- a/server/src/jamid/conversation-request-metadata.ts
+++ b/server/src/jamid/conversation-request-metadata.ts
@@ -19,4 +19,8 @@
   id: string;
   from: string;
   received: string;
+  avatar: string;
+  description: string;
+  title: string;
+  mode: string;
 }