Woocommerce Local Pickup Plus 2.11.7

* Tweak - Ensure that the "woocommerce-shipping-total shipping" CSS classes are added in the plugin HTML template output
* Misc - Dropped `woo-includes` folder and renamed `includes` folder to `src`

* Fix - Fix a bug that causes an error on checkout when the next day date is selected as the appointment date

* Fix - Add the missing cart displayed subtotal value when creating the pickup item package
* Fix - Fix a bug that causes next day date to be unavailable as an appointment date
* Fix - Prevent a fatal error triggered while trying to identify the timezone for a pickup location
* Fix - Address an issue where a virtual product in cart prevents the customer from selecting a pickup location or scheduling an appointment