AY-3-8910 instrument editor

The AY-3-8910 instrument editor consists of these macros.

[Volume] - volume levels sequence
[Arpeggio]- pitch sequence
[Noise Freq] - AY-3-8910 noise generator frequency sequence
[Waveform] - selector of sound type - square wave tone, noise or envelope generator
[Pitch] - fine pitch
[Phase Reset] - trigger restart of waveform
[Envelope] - allows shaping an envelope
[AutoEnv Num] - sets the envelope to the channel's frequency multiplied by numerator
[AutoEnv Den] - sets the envelope to the channel's frequency multiplied by denominator