Refactors calendar configuration and DI container setup

Removes singleton export for CalendarConfig
Updates dependency injection to use type registration
Adds more flexible renderer and service configuration
Integrates CalendarConfig with DateService initialization

src/core/CalendarConfig.ts

@@ -572,7 +572,4 @@ export class CalendarConfig {
     return this.timeFormatConfig.dateFormat;
   }
 
-}
-
-// Create singleton instance
-export const calendarConfig = new CalendarConfig();
+}