Add visualisation of the account's third party IDs in the account editor.

A category won't be shown if there are no relevant IDs (will add the ability to add new ones later).

Part of network/neochat#565

![image](/uploads/7da00b0b4acf90d145c09969ac2a91e1/image.png)

src/neochatconnection.cpp

@@ -16,6 +16,7 @@
 #include "spacehierarchycache.h"
 
 #include <Quotient/connection.h>
+#include <Quotient/jobs/basejob.h>
 #include <Quotient/quotient_common.h>
 #include <qt6keychain/keychain.h>
 
@@ -41,12 +42,14 @@ using namespace Qt::StringLiterals;
 
 NeoChatConnection::NeoChatConnection(QObject *parent)
     : Connection(parent)
+    , m_threePIdModel(new ThreePIdModel(this))
 {
     connectSignals();
 }
 
 NeoChatConnection::NeoChatConnection(const QUrl &server, QObject *parent)
     : Connection(server, parent)
+    , m_threePIdModel(new ThreePIdModel(this))
 {
     connectSignals();
 }
@@ -248,6 +251,11 @@ void NeoChatConnection::deactivateAccount(const QString &password)
     });
 }
 
+ThreePIdModel *NeoChatConnection::threePIdModel() const
+{
+    return m_threePIdModel;
+}
+
 void NeoChatConnection::createRoom(const QString &name, const QString &topic, const QString &parent, bool setChildParent)
 {
     QList<CreateRoomJob::StateEvent> initialStateEvents;