feat(i18n): add Polish (pl) translation (#1185)

* Translated settings. Added polish option to other languages and in the fronted UI itself. Translated settings to polish

* Corrections to the settings. Translated help page

* Translated orbit. Made corrections to help and settings

* playlists translated

* deviceSync translated

* search translated

* Statistics translated

* musicNetwork translated

* common translated

* player translated

* queue translated

* albumDetails translated

* connection and random mix translated

* artistDefails translated

* albums translated

* smartPlaylists translated

* nowPlaying translated. smartPlaylists corrections

* sidebar translated

* contextMenu translated

* translated radio

* translated sharePaste

* favorites translated

* nowPlayingInfo translated

* translated home and login

* translated artists, genres, licences, migration, mostPlayed, songInfo and tracks

* translated changelog, composerDetail, composers, entityRating, folderBrowser, hero, losslessAlbums, luckyMix, miniPlayer, randomAlbums, randomLanding, tray and whatsNew

* chore(release): CHANGELOG and credits for Polish locale (PR #1185)

* chore(release): mention Polish in 1.49.0 What's New highlights

* settings updated with new strings. Deleted old unecessary ones

* translated missing translations

* Fixed typos

* translated missing strings

* Added missing translations that appeared in #1186 and #1189

src/components/settings/SystemTab.tsx

@@ -76,6 +76,7 @@ export function SystemTab() {
                     { value: 'ro', label: t('settings.languageRo') },
                     { value: 'ja', label: t('settings.languageJa') },
                     { value: 'hu', label: t('settings.languageHu') },
+                    { value: 'pl', label: t('settings.languagePl') },
                   ]}
                 />
               </SettingsField>