Add support for TagParser as an alternative to TagLib

ext/libstrawberry-tagreader/tagreaderbase.cpp

@@ -0,0 +1,27 @@
+/* This file is part of Strawberry.
+   Copyright 2018-2021, Jonas Kvinge <jonas@jkvinge.net>
+
+   Strawberry is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation, either version 3 of the License, or
+   (at your option) any later version.
+
+   Strawberry 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.
+
+   You should have received a copy of the GNU General Public License
+   along with Strawberry.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#include "config.h"
+
+#include <string>
+
+#include "tagreaderbase.h"
+
+const std::string TagReaderBase::kEmbeddedCover = "(embedded)";
+
+TagReaderBase::TagReaderBase() {}
+TagReaderBase::~TagReaderBase() {}