WooCommerce Bookings 2.2.0

* Fix - All products shown as available in Bookings Calendar block.
* Fix - Google Calendar connection issues.
* Fix - Inconsistent availability view (months vs days).
* Fix - JavaScript coding standards (ESLint).
* Fix - Remote code injection vulnerability in the `Person_types` column while importing bookable products.
* Fix - Show First and Last days as unavailable if there are no available slots.
* Tweak - Improve save and rendering performance of Google Calendar event rules via a new, separate page.
* set minDate based on from_date.

* Fix - All time ranges should be checked before marking any block unbookable.
* Fix - Ensure maximum number of person type not allowed to exceed Max Persons setting.
* Fix - Hide products from the `/slot` endpoint if their catalog visibility is set to `hidden`.
* Fix - Make calendar popup and booking details popup WP 6.1 compatible.
* Fix - Show booking details on the booking details admin page if it does not have an order.

* Add - Support for High-performance Order Storage ("HPOS") (formerly known as Custom Order Tables, "COT").
* Dev - Bump NPM from 5.5.1 to 6.14.17.
* Dev - Bump node from 8.9.3 to 16.17.1.
* Fix - Admin calendar schedule view when a booking spans multiple days or months.
* Fix - Availability for adjacent multi-date bookings.
* Fix - Fixed bookable time issue of Google Calendar's recurring events.
* Tweak - Upgrade NPM dependencies.
* Tweak - WC 7.1.0 compatibility.