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_payment_change/doc/SECURITY.md

@@ -0,0 +1,34 @@
+# Security
+
+Access control and security definitions in pos_payment_change.
+
+## Access Control Lists (ACLs)
+
+Model access permissions defined in:
+- **[ir.model.access.csv](../pos_payment_change/security/ir.model.access.csv)**
+  - 3 model access rules
+
+## Record Rules
+
+Row-level security rules defined in:
+
+```mermaid
+graph TB
+    subgraph "Security Layers"
+        A[Users] --> B[Groups]
+        B --> C[Access Control Lists]
+        C --> D[Models]
+        B --> E[Record Rules]
+        E --> F[Individual Records]
+    end
+```
+
+Security files overview:
+- **[ir.model.access.csv](../pos_payment_change/security/ir.model.access.csv)**
+  - Model access permissions (CRUD rights)
+
+Notes
+- Access Control Lists define which groups can access which models
+- Record Rules provide row-level security (filter records by user/group)
+- Security groups organize users and define permission sets
+- All security is enforced at the ORM level by Odoo