📝 Add docs for response_model

docs/tutorial/src/response-model/tutorial001.py

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+from typing import Set
+
+from fastapi import FastAPI
+from pydantic import BaseModel
+
+app = FastAPI()
+
+
+class Item(BaseModel):
+    name: str
+    description: str = None
+    price: float
+    tax: float = None
+    tags: Set[str] = []
+
+
+@app.post("/items/", response_model=Item)
+async def create_item(*, item: Item):
+    return item

docs/tutorial/src/response-model/tutorial002.py

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+from fastapi import FastAPI
+from pydantic import BaseModel
+from pydantic.types import EmailStr
+
+app = FastAPI()
+
+
+class UserIn(BaseModel):
+    username: str
+    password: str
+    email: EmailStr
+    full_name: str = None
+
+
+# Don't do this in production!
+@app.post("/user/", response_model=UserIn)
+async def create_user(*, user: UserIn):
+    return user

docs/tutorial/src/response-model/tutorial003.py

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+from fastapi import FastAPI
+from pydantic import BaseModel
+from pydantic.types import EmailStr
+
+app = FastAPI()
+
+
+class UserIn(BaseModel):
+    username: str
+    password: str
+    email: EmailStr
+    full_name: str = None
+
+
+class UserOut(BaseModel):
+    username: str
+    email: EmailStr
+    full_name: str = None
+
+
+@app.post("/user/", response_model=UserOut)
+async def create_user(*, user: UserIn):
+    return user