Move the qt models to their own folder

Felt like the src folder was getting a bit crowded so move all the models to a folder named models.

src/models/devicesmodel.h

@@ -0,0 +1,47 @@
+// SPDX-FileCopyrightText: Tobias Fella <fella@posteo.de>
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#pragma once
+
+#include <QAbstractListModel>
+
+#include <csapi/definitions/client_device.h>
+
+namespace Quotient
+{
+class Connection;
+}
+
+class DevicesModel : public QAbstractListModel
+{
+    Q_OBJECT
+
+    Q_PROPERTY(Quotient::Connection *connection READ connection NOTIFY connectionChanged)
+
+public:
+    enum Roles {
+        Id,
+        DisplayName,
+        LastIp,
+        LastTimestamp,
+    };
+    Q_ENUM(Roles);
+
+    DevicesModel(QObject *parent = nullptr);
+
+    QVariant data(const QModelIndex &index, int role) const override;
+    QHash<int, QByteArray> roleNames() const override;
+    int rowCount(const QModelIndex &parent) const override;
+
+    Q_INVOKABLE void logout(int index, const QString &password);
+    Q_INVOKABLE void setName(int index, const QString &name);
+
+    Quotient::Connection *connection() const;
+
+Q_SIGNALS:
+    void connectionChanged();
+
+private:
+    void fetchDevices();
+    QVector<Quotient::Device> m_devices;
+};