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_margin/pos_margin/report/__init__.py

@@ -0,0 +1,5 @@
+# Copyright (C) 2023 - Today: GRAP (http://www.grap.coop)
+# @author: Sylvain LE GAL (https://twitter.com/legalsylvain)
+# License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl.html).
+
+from . import pos_order_report

odoo-bringout-oca-pos-pos_margin/pos_margin/report/pos_order_report.py

@@ -0,0 +1,28 @@
+# Copyright (C) 2023 - Today: GRAP (http://www.grap.coop)
+# @author: Sylvain LE GAL (https://twitter.com/legalsylvain)
+# License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl.html).
+
+from odoo import fields, models
+
+
+class PosOrderReport(models.Model):
+    _inherit = "report.pos.order"
+
+    margin_rate = fields.Float(string="Margin Rate (%)", group_operator="avg")
+
+    def _select(self):
+        return (
+            super(PosOrderReport, self)._select()
+            + """,
+             SUM(l.price_subtotal - l.total_cost / CASE COALESCE(s.currency_rate, 0)
+             WHEN 0 THEN 1.0 ELSE s.currency_rate END) / NULLIF(SUM(l.price_subtotal), 0) * 100
+             AS margin_rate
+            """
+        )
+
+    def _group_by(self):
+        group_by_append = """,
+            l.price_subtotal,
+            l.total_cost
+        """
+        return super(PosOrderReport, self)._group_by() + group_by_append