Refactors event rendering to be event-driven

Moves event rendering logic into a dedicated EventRenderer class that uses a strategy pattern for different calendar types.

The rendering is now triggered by `GRID_RENDERED` and `CONTAINER_READY_FOR_EVENTS` events, emitted by the GridManager and NavigationManager respectively.

This change decouples the CalendarManager from direct event rendering and allows for more flexible and efficient event updates. The EventManager now has a method to fetch events for a given time period.

Removes direct calls to event rendering from CalendarManager. Improves animation transitions by using pre-rendered containers in the NavigationManager.

src/types/CalendarTypes.ts

@@ -27,6 +27,12 @@ export interface ResourceCalendarData {
   resources: Resource[];
 }
 
+export interface RenderContext {
+  container: HTMLElement;
+  startDate: Date;
+  endDate: Date;
+}
+
 export interface CalendarEvent {
   id: string;
   title: string;