feat: Add CalendarSelector component and install new dependencies.

node_modules/rxjs/dist/esm5/internal/operators/mergeAll.js

@@ -0,0 +1,7 @@
+import { mergeMap } from './mergeMap';
+import { identity } from '../util/identity';
+export function mergeAll(concurrent) {
+    if (concurrent === void 0) { concurrent = Infinity; }
+    return mergeMap(identity, concurrent);
+}
+//# sourceMappingURL=mergeAll.js.map