McuSupport: Make plugin UI translatable

After refactoring, the package labels are sourced at run-time from json
kit files. Added a QMap containing all the known labels used to map
labels to their translation, McuPackage::packageLabelTranslations.

Task-number: QTCREATORBUG-27177
Change-Id: Ibd530a0f9c5dbbdf8c7d5eafa53785fb713c9d0a
Reviewed-by: <github-actions-qt-creator@cristianadam.eu>
Reviewed-by: Dawid Śliwa <dawid.sliwa@qt.io>
Reviewed-by: hjk <hjk@qt.io>

src/plugins/mcusupport/mcusupportsdk.cpp

@@ -640,7 +640,12 @@ static PackageDescription parsePackage(const QJsonObject &cmakeEntry)
     else
         defaultPathString = cmakeEntry["defaultValue"].toString();
 
-    return {cmakeEntry["label"].toString(),
+    QString label = cmakeEntry["label"].toString();
+
+    //Apply translations
+    label = McuPackage::packageLabelTranslations.value(label, label);
+
+    return {label,
             cmakeEntry["envVar"].toString(),
             cmakeEntry["cmakeVar"].toString(),
             cmakeEntry["description"].toString(),