Refactors event rendering and display

Improves event rendering by introducing dedicated event
renderers and streamlining event display logic.

- Adds a base event renderer and specialized date and
  resource-based renderers to handle event display logic.
- Renders all-day events within a dedicated container in the
  calendar header.
- Removes the direct filtering of all-day events from the
  `GridManager`.
- Fixes an issue where the 'Summer Festival' event started on the
  wrong date.

The changes enhance the flexibility and maintainability of the
calendar, provide dedicated containers and styling for allday events and fix date issues related to certain events

src/strategies/WeekViewStrategy.ts

@@ -39,8 +39,7 @@ export class WeekViewStrategy implements ViewStrategy {
     this.gridRenderer.renderGrid(
       context.container,
       context.currentDate,
-      context.resourceData,
-      context.allDayEvents
+      context.resourceData
     );
     
     console.log(`Week grid rendered with ${this.getLayoutConfig().columnCount} columns`);