feat: creating chats for cards and clients, sending and deleting text messages

schemas/card.py

@@ -8,6 +8,7 @@ from schemas.base import BaseSchema, OkMessageSchema
 from schemas.billing import CardBillRequestSchema
 from schemas.board import BoardSchema
 from schemas.card_tag import CardTagSchema
+from schemas.chat import ChatSchema
 from schemas.client import ClientSchema
 from schemas.group import CardGroupSchema
 from schemas.marketplace import BaseMarketplaceSchema
@@ -108,6 +109,7 @@ class BaseCardSchema(BaseSchema):
 
 class CardSchema(BaseCardSchema):
     attributes: list[CardAttributeSchema]
+    chat: Optional[ChatSchema]
 
 
 class CardGeneralInfoSchema(BaseSchemaWithAttributes):