Move all OCA HR modules from oca-technical to dedicated oca-hr submodule

Reorganized 67 HR-related modules for better structure:
- Moved all odoo-bringout-oca-hr-* packages from packages/oca-technical/
- Now organized in dedicated packages/oca-hr/ submodule
- Includes attendance, expense, holiday, employee, and contract modules
- Maintains all module functionality while improving project organization

This creates a cleaner separation between general technical modules
and HR-specific functionality.

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

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

odoo-bringout-oca-hr-hr_contract_reference/doc/ARCHITECTURE.md

@@ -0,0 +1,32 @@
+# Architecture
+
+```mermaid
+flowchart TD
+    U[Users] -->|HTTP| V[Views and QWeb Templates]
+    V --> C[Controllers]
+    V --> W[Wizards – Transient Models]
+    C --> M[Models and ORM]
+    W --> M
+    M --> R[Reports]
+    DX[Data XML] --> M
+    S[Security – ACLs and Groups] -. enforces .-> M
+
+    subgraph Hr_contract_reference Module - hr_contract_reference
+      direction LR
+      M:::layer
+      W:::layer
+      C:::layer
+      V:::layer
+      R:::layer
+      S:::layer
+      DX:::layer
+    end
+
+    classDef layer fill:#eef8ff,stroke:#6ea8fe,stroke-width:1px
+```
+
+Notes
+- Views include tree/form/kanban templates and report templates.
+- Controllers provide website/portal routes when present.
+- Wizards are UI flows implemented with `models.TransientModel`.
+- Data XML loads data/demo records; Security defines groups and access.