feat: Add CalendarSelector component and install new dependencies.

node_modules/rxjs/dist/esm/internal/operators/scanInternals.js

@@ -0,0 +1,22 @@
+import { createOperatorSubscriber } from './OperatorSubscriber';
+export function scanInternals(accumulator, seed, hasSeed, emitOnNext, emitBeforeComplete) {
+    return (source, subscriber) => {
+        let hasState = hasSeed;
+        let state = seed;
+        let index = 0;
+        source.subscribe(createOperatorSubscriber(subscriber, (value) => {
+            const i = index++;
+            state = hasState
+                ?
+                    accumulator(state, value, i)
+                :
+                    ((hasState = true), value);
+            emitOnNext && subscriber.next(state);
+        }, emitBeforeComplete &&
+            (() => {
+                hasState && subscriber.next(state);
+                subscriber.complete();
+            })));
+    };
+}
+//# sourceMappingURL=scanInternals.js.map