fix(cpn): radio specific name and label validators (#4670)

Only allows valid characters in names, drops invalid characters if present

companion/src/shared/textvalidator.h

@@ -0,0 +1,44 @@
+/*
+ * Copyright (C) EdgeTX
+ *
+ * Based on code named
+ *   opentx - https://github.com/opentx/opentx
+ *   th9x - http://code.google.com/p/th9x
+ *   er9x - http://code.google.com/p/er9x
+ *   gruvin9x - http://code.google.com/p/gruvin9x
+ *
+ * License GPLv2: http://www.gnu.org/licenses/gpl-2.0.html
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ */
+
+#pragma once
+
+#include "boards.h"
+
+#include <QRegularExpressionValidator>
+
+class TextValidator : public QRegularExpressionValidator
+{
+  Q_OBJECT
+
+  public:
+    explicit TextValidator(QObject * parent, const QString &pattern, const QChar invalidRepl = QChar(' '),
+                           QRegularExpression::PatternOptions options = QRegularExpression::NoPatternOption);
+    virtual ~TextValidator() {}
+
+    void fixup(QString &input) const;
+    virtual bool isValid(const QString &input) const;
+
+  private:
+    QChar invalidRepl;
+    QRegularExpression regexp;
+};
+