Refactor ChannelDetail and MediaImportDialog components for improved functionality and clarity

Consolidated imports in ChannelDetail and replaced the SchedulePreview component with AirSchedule for enhanced scheduling display. Updated the MediaImportDialog to prioritize the manual tab and adjusted localization strings for clarity in both English and Russian. These changes aim to streamline user interactions and improve the overall user experience in managing channels and media imports.

frontend/src/shared/lib/locales/en.ts

@@ -281,7 +281,7 @@ export const en = {
       importButton: 'Import',
       importTitle: 'Media import',
       importHint:
-        'Three ways to fill the library: movies in bulk, episodes from the manual folder into a show, and uploading picked files into a show.',
+        'Three ways to fill the library: episodes from the manual folder into a show, movies in bulk, and uploading picked files into a show.',
       importTabs: {
         movies: 'Movies',
         manual: 'Episodes from manual',
@@ -733,6 +733,8 @@ export const en = {
       filler: 'Filler',
       noFiller: 'No filler',
       noSchedule: 'Schedule not built yet',
+      airToday: 'Today',
+      airCount: 'Entries for the day: {{count}}',
     },
     junctions: {
       title: 'Junctions',