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/completionproxymodel.cpp

@@ -0,0 +1,64 @@
+// SPDX-FileCopyrightText: 2022 Tobias Fella <fella@posteo.de>
+// SPDX-License-Identifier: LGPL-2.0-or-later
+
+#include "completionproxymodel.h"
+#include <QDebug>
+
+#include "neochatroom.h"
+
+bool CompletionProxyModel::filterAcceptsRow(int sourceRow, const QModelIndex &sourceParent) const
+{
+    Q_UNUSED(sourceParent);
+    if (m_filterText.isEmpty()) {
+        return false;
+    }
+    return (sourceModel()->data(sourceModel()->index(sourceRow, 0), filterRole()).toString().startsWith(m_filterText, Qt::CaseInsensitive)
+            && !m_fullText.startsWith(sourceModel()->data(sourceModel()->index(sourceRow, 0), filterRole()).toString()))
+        || (m_secondaryFilterRole != -1
+            && sourceModel()
+                   ->data(sourceModel()->index(sourceRow, 0), secondaryFilterRole())
+                   .toString()
+#if QT_VERSION > QT_VERSION_CHECK(6, 0, 0)
+                   .startsWith(QStringView(m_filterText).sliced(1), Qt::CaseInsensitive));
+#else
+                   .startsWith(m_filterText.midRef(1), Qt::CaseInsensitive));
+#endif
+}
+
+bool CompletionProxyModel::lessThan(const QModelIndex &source_left, const QModelIndex &source_right) const
+{
+    if (m_secondaryFilterRole == -1)
+        return QSortFilterProxyModel::lessThan(source_left, source_right);
+    bool left_primary = sourceModel()->data(source_left, filterRole()).toString().startsWith(m_filterText, Qt::CaseInsensitive);
+    bool right_primary = sourceModel()->data(source_right, filterRole()).toString().startsWith(m_filterText, Qt::CaseInsensitive);
+    if (left_primary != right_primary)
+        return left_primary;
+    return QSortFilterProxyModel::lessThan(source_left, source_right);
+}
+
+int CompletionProxyModel::secondaryFilterRole() const
+{
+    return m_secondaryFilterRole;
+}
+
+void CompletionProxyModel::setSecondaryFilterRole(int role)
+{
+    m_secondaryFilterRole = role;
+    Q_EMIT secondaryFilterRoleChanged();
+}
+
+QString CompletionProxyModel::filterText() const
+{
+    return m_filterText;
+}
+
+void CompletionProxyModel::setFilterText(const QString &filterText)
+{
+    m_filterText = filterText;
+    Q_EMIT filterTextChanged();
+}
+
+void CompletionProxyModel::setFullText(const QString &fullText)
+{
+    m_fullText = fullText;
+}