Memory and performance leak

[ludzeller]

I think there is memory leak in your UniVoiceAudioSourceOutput.cs class, the segments Dictionary grew in size quickly for me, several thousands stale entries after only some minutes if I remember correctly. Since you call LINQ in it very often that lead to severe performance issues after 10 minutes or so on Meta Quest 3.

I fixed it in my repo, this is the last of the commits that fixed it:
SphericalLabs/OpenSoundLab@9ec81ed#diff-ca7e8cba7d09de800d5d4fbca961b12c7ad8854503da0679b1777ca0cff2967d

After that I went on to rewrite that class completely so that it avoids the CircularBuffer and runs directly on the audio thread, which in my case is desireable. So far it seems to run quite well:
https://github.com/SphericalLabs/OpenSoundLab/blob/master/Assets/UniVoiceAssets/Adrenak.UniVoice.AudioSourceOutput/Runtime/UniVoiceAudioSourceOutput.cs

Please let me know if you can confirm that performance leak and let me know if you want to incorporate the script in your library. I am happy to share it.