Add health check.

main.py

@@ -55,6 +55,10 @@ except FileNotFoundError:
 
 
 #3. ENDPOINTS DA API
+@app.get("/") #HEALTH CHECK
+async def root():
+    return {"message": "API Dr. Plant está ONLINE! Use o endpoint /classify/ para enviar imagens."}
+
 @app.post("/classify/")
 async def classify_image(file: UploadFile = File(...), token: str = Depends(verify_token)):
     """