Tempo synced Delay Plugin

I have been working on a native delay plugin. It makes use of the TempoSycnKnob for both the delay time, and the lfo time.

first pull request ever !!! please let me know if I have done anything  wrong..
always replace divisions with multiplications where possible, eg. use * 0.5 instead of / 2.0 here
divisions are like 20x slower than multiplications