add webservice boilerplate snippet

snippets/websrv/main.py

@@ -0,0 +1,33 @@
+from fastapi import FastAPI
+from fastapi.responses import JSONResponse
+
+app = FastAPI(
+    title="My FastAPI App",
+    version="1.0.0",
+    description="A simple FastAPI example with uvicorn and gunicorn."
+)
+
+@app.get("/hello")
+async def say_hello(name: str):
+    """
+    Returns a friendly greeting.
+    ---
+    parameters:
+      - name: name
+        in: query
+        required: true
+        schema:
+          type: string
+    responses:
+      200:
+        description: Successful Response
+        content:
+          application/json:
+            schema:
+              type: object
+              properties:
+                message:
+                  type: string
+    """
+    return JSONResponse(content={"message": f"Hello, {name}!"})
+