feat: Add CalendarSelector component and install new dependencies.

node_modules/rxjs/dist/esm/internal/observable/defer.js

@@ -0,0 +1,8 @@
+import { Observable } from '../Observable';
+import { innerFrom } from './innerFrom';
+export function defer(observableFactory) {
+    return new Observable((subscriber) => {
+        innerFrom(observableFactory()).subscribe(subscriber);
+    });
+}
+//# sourceMappingURL=defer.js.map