Move all OCA POS modules from oca-technical to dedicated oca-pos submodule

Reorganized 74 POS-related modules for better structure:
- Moved all odoo-bringout-oca-pos-* packages from packages/oca-technical/
- Now organized in dedicated packages/oca-pos/ submodule
- Includes payment, receipt, loyalty, order, product, and partner modules
- Maintains all module functionality while improving project organization

This creates a cleaner separation between general technical modules
and Point of Sale specific functionality.

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

odoo-bringout-oca-pos-pos_membership_extension/pos_membership_extension/readme/USAGE.rst

@@ -0,0 +1,24 @@
+* open the Point of Sale product
+
+* You can see that some products have a new icon that mention
+  that the product is not sallable. the icon disappear if you select
+  a customer that belong to one of the membership categories :
+
+  .. figure:: ../static/description/point_of_sale_product_item.png
+
+* The module adds in the Product Pop Up info, the list of the membership categories
+  allowed for the current product :
+
+  .. figure:: ../static/description/point_of_sale_popup_product_info.png
+
+* If you select the product with an incorrect customer,
+  you'll see an error Popup :
+
+  .. figure:: ../static/description/point_of_sale_popup_error.png
+
+* If you selected allowed restricted product for a partner, and then switch
+  for another partner, a check is realized to verify that the selected products
+  are allowed. If not, order lines will be removed and a popup message
+  will be displayed :
+
+  .. figure:: ../static/description/point_of_sale_switch_partner_popup.png