Adds work week configuration feature

Implements configurable work week presets, allowing users to customize the days displayed in the calendar.

This includes:
- Defining work week settings (work days, day names, total days).
- Providing predefined work week presets (standard, compressed, weekend, full week).
- Adding UI elements to switch between presets.
- Updating grid and header rendering logic to reflect the selected work week.
- Emitting events when the work week changes, triggering necessary UI updates and data re-renders.

This provides a more flexible and personalized calendar experience.

src/constants/EventTypes.ts

@@ -13,6 +13,7 @@ export const EventTypes = {
   CONFIG_UPDATE: 'calendar:configupdate',
   CALENDAR_TYPE_CHANGED: 'calendar:calendartypechanged',
   SELECTED_DATE_CHANGED: 'calendar:selecteddatechanged',
+  WORKWEEK_CHANGED: 'calendar:workweekchanged',
   
   // View change events
   VIEW_CHANGE: 'calendar:viewchange',
@@ -86,7 +87,7 @@ export const EventTypes = {
   // Management events (legacy - prefer StateEvents)
   REFRESH_REQUESTED: 'calendar:refreshrequested',
   RESET_REQUESTED: 'calendar:resetrequested',
-  CALENDAR_REFRESH_REQUESTED: 'calendar:refreshrequested',
+  CALENDAR_REFRESH_REQUESTED: 'calendar:calendarrefreshrequested',
   CALENDAR_RESET: 'calendar:reset',
   
   // System events