feat(tracker/presets): new and tweaked presets from Reaby

The presets are also organized by their type into subfolders.

Closes #136

tracker/presets/ST/Pizzicato_octaves.yml

@@ -0,0 +1,36 @@
+name: Pizzicato_octaves
+numvoices: 4
+units:
+    - type: envelope
+      id: 1
+      parameters: {attack: 0, decay: 74, gain: 64, release: 62, stereo: 0, sustain: 0}
+    - type: oscillator
+      id: 2
+      parameters: {color: 60, detune: 64, gain: 89, looplength: 398, loopstart: 2073, phase: 0, samplestart: 1034961, shape: 89, stereo: 0, transpose: 65, type: 4, unison: 0}
+    - type: oscillator
+      id: 224
+      parameters: {auxgain: 64, color: 64, detune: 63, gain: 128, looplength: 398, loopstart: 2073, outgain: 64, phase: 0, samplestart: 1034961, shape: 42, stereo: 0, transpose: 77, type: 4, unison: 0}
+    - type: distort
+      id: 50
+      parameters: {drive: 94, stereo: 0}
+    - type: addp
+      id: 16
+      parameters: {stereo: 0}
+    - type: mulp
+      id: 14
+      parameters: {bandpass: 0, frequency: 82, highpass: 0, lowpass: 1, negbandpass: 0, neghighpass: 0, resonance: 128, stereo: 0}
+    - type: filter
+      id: 15
+      parameters: {bandpass: 0, frequency: 101, highpass: 0, lowpass: 1, negbandpass: 0, neghighpass: 1, resonance: 94, stereo: 0}
+    - id: 225
+      parameters: {}
+    - type: pan
+      id: 5
+      parameters: {auxgain: 39, outgain: 58, panning: 65, stereo: 0}
+    - type: delay
+      id: 49
+      parameters: {damp: 72, dry: 116, feedback: 22, notetracking: 0, pregain: 86, stereo: 1}
+      varargs: [3835, 4184]
+    - type: outaux
+      id: 6
+      parameters: {auxgain: 22, outgain: 57, stereo: 1}