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.
Improves resource calendar mode by passing resource data
to the grid manager for rendering, enabling specific
resource-based views. Also, it stores raw event data
to improve data management.
