Feat: unify view search params (#1947)

* feat: main src in backstage view

* feat: main src in timeline view

* feat: main src in countdown view

* feat: main src in studio view

* feat: hide past events in countdown view

* notes can not be set as main src

* feat: show group title as secondary src

* chore: spelling

Co-authored-by: Carlos Valente <34649812+cpvalente@users.noreply.github.com>

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Co-authored-by: Carlos Valente <34649812+cpvalente@users.noreply.github.com>

packages/types/src/translations/index.ts

@@ -19,6 +19,7 @@ export const langEn = {
   'countdown.to_start': 'Time to start',
   'countdown.waiting': 'Waiting for event start',
   'countdown.overtime': 'in overtime',
+  'countdown.all_have_finished': 'All selected events have finished',
   'timeline.live': 'live',
   'timeline.done': 'done',
   'timeline.due': 'due',