Add-on pages, Discount pages, and more

Version 1.1.0 is now released and in this release, we got some brand new pages in the new Admin: Add-ons and Discount pages

The new Add-ons pages include an Add-on List page, a Create Add-on page, and an Edit Add-On page.

The new discount pages include a Discount List page, a Create Discount page, an Edit Discount page, and a Discount Settings page.

I'll let you explore the new pages yourself instead of posting screenshots.

In addition to some bug fixes and improvements, we have also added a Geolocation subsection in the Customer section on Invoice Details pages.