Configurable sample rate for fyrox-sound

[eriknstevenson]

Thanks for providing this open source library.

Problem this feature should fix

There is a TODO in the code for this

Fyrox/fyrox-sound/src/context.rs

Line 55 in a63a97b

/// TODO: Make this configurable, for now its set to most commonly used sample rate of 44100 Hz.

I have found that the default sample rate (44100) results in crackling audio playback in Firefox browser running on Android.

I am working around this for now by modifying sample rate in a fork of the lib.

Expected solution

Allow user of fyrox-sound to specify audio sample rate.

Thanks

[mrDIMAS]

I added SoundEngine::set_sample_rate for this in a4df8a1