feat(translate): add per-series glossary with auto extraction

autotests/glossarystoretest.cpp

@@ -0,0 +1,30 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#include "glossarystore.h"
+
+#include <QStandardPaths>
+#include <QTest>
+using namespace Qt::Literals::StringLiterals;
+
+class GlossaryStoreTest : public QObject
+{
+    Q_OBJECT
+private Q_SLOTS:
+    void saveLoadMerge()
+    {
+        QTemporaryDir temp;
+        QStandardPaths::setTestModeEnabled(true);
+        const QString directory = temp.path() + u"/series"_s;
+        GlossaryStore::Glossary original{directory, {{u"Lin"_s, u"Lâm"_s}}};
+        QVERIFY(GlossaryStore::save(original));
+        const auto loaded = GlossaryStore::load(directory);
+        QCOMPARE(loaded.entries.size(), 1);
+        const auto merged = GlossaryStore::merge(loaded, {{u"Lin"_s, u"Other"_s}, {u"Sect"_s, u"Tông"_s}});
+        QCOMPARE(merged.entries.size(), 2);
+        QCOMPARE(merged.entries.at(0).target, u"Lâm"_s);
+        QCOMPARE(merged.entries.at(1).source, u"Sect"_s);
+    }
+};
+
+QTEST_MAIN(GlossaryStoreTest)
+#include "glossarystoretest.moc"