[IMP] point_of_sale,pos_*: top bar improvements and ticket list

The following changes are made in this task:

1. Remove order tabs and replace with ticket list.
2. Top bar color change.
3. Search bar in the product screen is moved in the top bar.
4. List of sub-categories are now in the same line as the category
breadcrumbs.

closes odoo/odoo#55100

Task-id: 2276678
Signed-off-by: pimodoo <pimodoo@users.noreply.github.com>