Add example model, route and logic for development testing and boilerplate

app/models/example_model.py

@@ -0,0 +1,12 @@
+from sqlmodel import SQLModel, Field
+
+class ExampleModel(SQLModel, table=True):
+
+    id: int | None = Field(
+        default=None,
+        primary_key=True
+    )
+
+    example_text: str
+
+    example_number: int