Add Recurring Events Web Part with data service and UI components

- Implement RecurringEventsDataService for fetching events from SharePoint lists.
- Define types for events and categories in RecurringEventsTypes.
- Create RecurringEventsWebPart to manage properties and render events.
- Develop UI components for displaying events in filmstrip and compact layouts.
- Add localization support for English and German languages.
- Implement tests for core functionalities related to event handling.
- Set up TypeScript and TSLint configurations for the project.

config/serve.json

@@ -0,0 +1,6 @@
+{
+  "$schema": "https://developer.microsoft.com/json-schemas/core-build/serve.schema.json",
+  "port": 4321,
+  "https": true,
+  "initialPage": "https://localhost:5432/workbench"
+}