LanguageWire connector: language mapping UI + first v17 release

Jumoo.TranslationManager.LanguageWire: reworked language mapping config UI — both sides are now dropdowns, sourced from Umbraco's installed languages and LanguageWire's language list
added a "Language Status" check + warning banner on the config page, flagging installed languages that don't resolve to a valid LanguageWire language
submitted job view: shows job stage + LanguageWire error messages, added a manual refresh button and 5-minute polling, moved debug output into its own box, tidied layout
pending-simple view: tightened property row spacing
released v17.0.0 to NuGet — first tagged release, confirms release.yml works end-to-end