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/actionsmodel.h

@@ -0,0 +1,49 @@
+// SPDX-FileCopyrightText: 2022 Tobias Fella <fella@posteo.de>
+// SPDX-License-Identifier: LGPL-2.0-or-later
+
+#pragma once
+
+#include <KLazyLocalizedString>
+#include <QAbstractListModel>
+#include <events/roommessageevent.h>
+
+class NeoChatRoom;
+
+class ActionsModel : public QAbstractListModel
+{
+public:
+    struct Action {
+        // The prefix, without '/' and space after the word
+        QString prefix;
+        std::function<QString(const QString &, NeoChatRoom *)> handle;
+        // If this is true, this action transforms a message to a different message and it will be sent.
+        // If this is false, this message does some action on the client and should not be sent as a message.
+        bool messageAction;
+        // If this action changes the message type, this is the new message type. Otherwise it's nullopt
+        std::optional<Quotient::RoomMessageEvent::MsgType> messageType = std::nullopt;
+        KLazyLocalizedString parameters;
+        KLazyLocalizedString description;
+    };
+    static ActionsModel &instance()
+    {
+        static ActionsModel _instance;
+        return _instance;
+    }
+
+    enum Roles {
+        Prefix = Qt::DisplayRole,
+        Description,
+        CompletionType,
+        Parameters,
+    };
+    Q_ENUM(Roles);
+
+    int rowCount(const QModelIndex &parent = QModelIndex()) const override;
+    QVariant data(const QModelIndex &index, int role = Qt::DisplayRole) const override;
+    QHash<int, QByteArray> roleNames() const override;
+
+    QVector<Action> &allActions() const;
+
+private:
+    ActionsModel() = default;
+};