feat(Instructor): integrate with SQLModel, provide documentation and example (#418)

Co-authored-by: Jason Liu <jxnl@users.noreply.github.com>

examples/sqlmodel/run.py

@@ -0,0 +1,39 @@
+import instructor
+from openai import OpenAI
+from typing import Optional
+from sqlmodel import Field, SQLModel, create_engine, Session
+
+
+# Define the model that will serve as a Table for the database
+class Hero(SQLModel, instructor.OpenAISchema, table=True):
+    id: Optional[int] = Field(default=None, primary_key=True)
+    name: str
+    secret_name: str
+    age: Optional[int] = None
+
+
+# Function to query OpenAI for a Hero record
+client = instructor.patch(OpenAI())
+
+
+def create_hero() -> Hero:
+    return client.chat.completions.create(
+        model="gpt-3.5-turbo",
+        response_model=Hero,
+        messages=[
+            {"role": "user", "content": "Make a new superhero"},
+        ],
+    )
+
+
+# Insert the response into the database
+engine = create_engine("sqlite:///database.db")
+SQLModel.metadata.create_all(engine)
+
+hero = create_hero()
+print(hero.model_dump())
+
+
+with Session(engine) as session:
+    session.add(hero)
+    session.commit()