feat: Add CalendarSelector component and install new dependencies.

node_modules/rxjs/dist/esm/internal/observable/never.js

@@ -0,0 +1,7 @@
+import { Observable } from '../Observable';
+import { noop } from '../util/noop';
+export const NEVER = new Observable(noop);
+export function never() {
+    return NEVER;
+}
+//# sourceMappingURL=never.js.map