Rename locales to Weblate locales for 3.5

[bozana]

We have just merged this issue pkp/pkp-lib#9707 that aligns PKP locales with Weblate locales (s. https://github.com/WeblateOrg/language-data/blob/main/languages.csv). I am going through the plugins from the PKP plugin gallery (for 3.4 release) and will inform the maintainers if they would need to rename the plugin locales for 3.5 (coming in the first quarter of 2025).
If this plugin is going to be made compatible with the coming release 3.5 the locales renaming would be needed. (en_US should be en, it_IT should be it, tr_TR should be tr).
(This PHP script could be use for that https://github.com/bozana/ojs/blob/9707-plugins/renameEachPluginLocales.php, if wished. It would need to be copied into the plugin folder, the locales in the script adapted (as said above), and then the script run.)