Refactor CalendarConfig to static configuration class

Converts CalendarConfig to a pure static configuration management class with improved initialization and dependency handling

Removes event bus dependencies and simplifies configuration loading
Adds static methods for config management and initialization
Improves flexibility and reduces class complexity

src/types/CalendarTypes.ts

@@ -50,7 +50,7 @@ export interface CalendarEvent {
   metadata?: Record<string, any>;
 }
 
-export interface CalendarConfig {
+export interface ICalendarConfig {
   // Scrollbar styling
   scrollbarWidth: number;      // Width of scrollbar in pixels
   scrollbarColor: string;      // Scrollbar thumb color