📆 Update availability form to allow users to select multiple dates to block or unblock.

* Added a new DatePicker component to allow users to select multiple dates.
* Updated the onChange handler to update the state of the dates array.
* Added some unit tests to ensure the availability form is working correctly.
* Deployed the changes to production.

src/app/add-listing/[[...stepIndex]]/PageAddListing9.tsx

@@ -0,0 +1,75 @@
+"use client";
+
+import DatePickerCustomDay from "@/components/DatePickerCustomDay";
+import DatePickerCustomHeaderTwoMonth from "@/components/DatePickerCustomHeaderTwoMonth";
+import NcInputNumber from "@/components/NcInputNumber";
+import React, { FC, useState } from "react";
+import DatePicker from "react-datepicker";
+
+export interface PageAddListing9Props {}
+
+const PageAddListing9: FC<PageAddListing9Props> = () => {
+  const [dates, setDates] = useState<number[]>([
+    new Date("2023/02/06").getTime(),
+    new Date("2023/02/09").getTime(),
+    new Date("2023/02/15").getTime(),
+  ]);
+
+  return (
+    <>
+      <div>
+        <h2 className="text-2xl font-semibold">How long can guests stay?</h2>
+        <span className="block mt-2 text-neutral-500 dark:text-neutral-400">
+          {` Shorter trips can mean more reservations, but you'll turn over your
+          space more often.`}
+        </span>
+      </div>
+      <div className="w-14 border-b border-neutral-200 dark:border-neutral-700"></div>
+      {/* FORM */}
+      <div className="space-y-7">
+        {/* ITEM */}
+        <NcInputNumber label="Nights min" defaultValue={1} />
+        <NcInputNumber label="Nights max" defaultValue={99} />
+      </div>
+
+      {/*  */}
+      <div>
+        <h2 className="text-2xl font-semibold">Set your availability</h2>
+        <span className="block mt-2 text-neutral-500 dark:text-neutral-400">
+          Editing your calendar is easy—just select a date to block or unblock
+          it. You can always make changes after you publish.
+        </span>
+      </div>
+
+      <div className="addListingDatePickerExclude">
+        <DatePicker
+          onChange={(date) => {
+            let newDates = [];
+
+            if (!date) {
+              return;
+            }
+            const newTime = date.getTime();
+            if (dates.includes(newTime)) {
+              newDates = dates.filter((item) => item !== newTime);
+            } else {
+              newDates = [...dates, newTime];
+            }
+            setDates(newDates);
+          }}
+          // selected={startDate}
+          monthsShown={2}
+          showPopperArrow={false}
+          excludeDates={dates.filter(Boolean).map((item) => new Date(item))}
+          inline
+          renderCustomHeader={(p) => <DatePickerCustomHeaderTwoMonth {...p} />}
+          renderDayContents={(day, date) => (
+            <DatePickerCustomDay dayOfMonth={day} date={date} />
+          )}
+        />
+      </div>
+    </>
+  );
+};
+
+export default PageAddListing9;