add initial vllm inf script

assets/example_prompts.txt

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+Rock piece suitable for a hero's epic battle against a dark villain. The music is rich with synth leads, brass section, and heavy drums.
+A sad and emotional song featuring relentless, heartbreaking acoustic guitars.
+Slow and loving music that is best for a romantic film. The piano and string ensemble give a classical vibe.
+An energetic and motivating pop song you love to hear on a long road trip.
+Upbeat and playful jazz music with lively saxophones, like you're going out on a Sunday picnic.