feat: Add CalendarSelector component and install new dependencies.

node_modules/rxjs/dist/cjs/internal/operators/switchScan.js

@@ -0,0 +1,16 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.switchScan = void 0;
+var switchMap_1 = require("./switchMap");
+var lift_1 = require("../util/lift");
+function switchScan(accumulator, seed) {
+    return lift_1.operate(function (source, subscriber) {
+        var state = seed;
+        switchMap_1.switchMap(function (value, index) { return accumulator(state, value, index); }, function (_, innerValue) { return ((state = innerValue), innerValue); })(source).subscribe(subscriber);
+        return function () {
+            state = null;
+        };
+    });
+}
+exports.switchScan = switchScan;
+//# sourceMappingURL=switchScan.js.map