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/pos_membership/demo/res_partner.xml

@@ -0,0 +1,12 @@
+<?xml version="1.0" encoding="utf-8" ?>
+<!--
+    Copyright (C) 2022-Today GRAP (http://www.grap.coop)
+    @author Sylvain LE GAL (https://twitter.com/legalsylvain)
+    License AGPL-3 - See http://www.gnu.org/licenses/agpl-3.0.html
+-->
+<odoo>
+    <record id="free_membership_partner" model="res.partner">
+        <field name="name">Demo Partner with Free Membership</field>
+        <field name="free_member" eval="True" />
+    </record>
+</odoo>