Add Czech language to the list

You can now select Czech as your Cura language.

Contributes to issue CURA-7285.

resources/qml/Preferences/GeneralPage.qml

@@ -152,6 +152,7 @@ UM.PreferencesPage
 
                         Component.onCompleted: {
                             append({ text: "English", code: "en_US" })
+                            append({ text: "Czech", code: "cs_CZ" })
                             append({ text: "Deutsch", code: "de_DE" })
                             append({ text: "Español", code: "es_ES" })
                             //Finnish is disabled for being incomplete: append({ text: "Suomi", code: "fi_FI" })