Add oca-web submodule with 68 web modules

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

odoo-bringout-oca-web-web_widget_pattern_partner_autocomplete/doc/ARCHITECTURE.md

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+# 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 Web_widget_pattern_partner_autocomplete Module - web_widget_pattern_partner_autocomplete
+      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.