Add oca-crm submodule with 26 CRM modules

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

odoo-bringout-oca-crm-crm_salesperson_planner/doc/MODELS.md

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+# Models
+
+Detected core models and extensions in crm_salesperson_planner.
+
+```mermaid
+classDiagram
+    class crm_salesperson_planner_visit
+    class crm_salesperson_planner_visit_close_reason
+    class crm_salesperson_planner_visit_template
+    class calendar_event
+    class crm_lead
+    class res_partner
+```
+
+Notes
+- Classes show model technical names; fields omitted for brevity.
+- Items listed under _inherit are extensions of existing models.