Fix audio delay (Linux): added pulse audio and pipewire configuration RustDesk service #12724
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As per discussion in this issue: #534 it appears the RuskDesk service on Linux does not configure the environment to suitably reduce audio delay.
Without these environment variable configurations, I was able to reproduce ~2-3s on audio delay on Ubuntu 24.04 using RustDesk 1.4.
According to the thread the following variables need to configured:
PULSE_LATENCY_MSEC
PIPEWIRE_LATENCY
I chose values that seemed acceptable from brief testing and these values worked well for my case.
It is unclear to me how/if these variables should be somehow configured for RustDesk usage that is not started as a service and as such this PR does not address that topic.