We're keeping the `store-integrations-list` extension point name for backwards compatibility, otherwise I renamed all "integration" occurences in the views and also the routes.
Note: We still refer to external software like WooCommerce, Drupal, Magento and such as "integrations", I think that distinction makes sense.
Closes#3594.
* LNURL: Use Lightning description template in LNURL metadata
Unifies the invoice description for the Lightning and LNURL payment methods and fixes#3634.
* Add POS Order ID for consistency with Crowdfund
* LNURL: Add POS item metadata to invoice
For consistency with the Lightning payment method. Closes#3655.
