Render waveform for streaming HLS and pre-calculated samples

[anhekkk]

It is really hard to find a libary that helps me to render wave form for streaming HLS. Reason maybe is waveform should be calculated first, while HLS get chunk by chunk.

But samples of wave form can be pre-calculated from back-end, and mobile call to get it. Hope this library can add this feature, may be some helps with just_audio for HLS audio stream. Cause I'd like to use the interaction feature of this audio_waveforms lib.

Thanks all of you a lot!