feat(integrations): add SaleOrder service for Odoo sales

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

services/integrations/app/schemas/sale.py

@@ -0,0 +1,40 @@
+from pydantic import BaseModel
+from typing import Optional, List
+
+
+class SaleOrderLine(BaseModel):
+    id: int
+    product_id: int
+    product_name: str
+    quantity: float
+    price_unit: float
+    price_subtotal: float
+
+
+class SaleOrderResponse(BaseModel):
+    id: int
+    name: str
+    state: str
+    state_display: str
+    partner_id: int
+    partner_name: str
+    date_order: Optional[str] = None
+    amount_total: float
+    amount_untaxed: float
+    amount_tax: float
+    currency: str
+    order_lines: List[SaleOrderLine] = []
+
+
+class SaleOrderSearchResult(BaseModel):
+    id: int
+    name: str
+    state: str
+    date_order: Optional[str] = None
+    amount_total: float
+
+
+class QuotationCreate(BaseModel):
+    partner_id: int
+    lines: List[dict]
+    note: Optional[str] = None