feat!: display the parameters as knobs in a grid

Also removed the negbandpass & neghighpass parameters
and replaced them with bandpass & highpass set to -1, to
fit the switches better to the GUI.

Closes #51, closes #173

tracker/presets/DR/snare edm 2 (sample-st).yml

@@ -1,43 +0,0 @@
-name: snare edm 2
-comment: 'Suggested range: E-2 to C-3'
-numvoices: 1
-units:
-    - type: envelope
-      parameters: {attack: 14, decay: 68, gain: 110, release: 0, stereo: 0, sustain: 0}
-    - type: oscillator
-      id: 200
-      parameters: {color: 48, detune: 52, gain: 53, lfo: 0, looplength: 1, loopstart: 4276, phase: 0, samplestart: 560606, shape: 81, stereo: 0, transpose: 76, type: 4}
-    - parameters: {}
-    - type: mulp
-      parameters: {panning: 64, stereo: 0}
-    - type: envelope
-      parameters: {attack: 0, auxgain: 64, decay: 68, gain: 83, outgain: 64, release: 0, stereo: 0, sustain: 0}
-    - type: noise
-      parameters: {gain: 39, shape: 2, stereo: 0}
-    - type: mulp
-      parameters: {stereo: 0}
-    - type: filter
-      id: 201
-      parameters: {bandpass: 0, frequency: 110, highpass: 0, lowpass: 1, negbandpass: 0, neghighpass: 1, resonance: 128, stereo: 0}
-    - type: filter
-      parameters: {bandpass: 0, frequency: 118, highpass: 0, lowpass: 1, negbandpass: 0, neghighpass: 0, resonance: 112, stereo: 0}
-    - type: addp
-      parameters: {stereo: 0}
-    - type: pan
-      parameters: {panning: 59, stereo: 0}
-    - type: outaux
-      parameters: {auxgain: 8, outgain: 128, stereo: 1}
-    - type: envelope
-      parameters: {attack: 38, decay: 49, gain: 128, release: 0, stereo: 0, sustain: 0}
-      disabled: true
-    - type: send
-      parameters: {amount: 70, port: 0, sendpop: 1, target: 200}
-      disabled: true
-    - type: envelope
-      parameters: {attack: 47, decay: 54, gain: 128, release: 0, stereo: 0, sustain: 0}
-    - type: send
-      parameters: {amount: 19, port: 0, sendpop: 1, target: 201}
-    - type: envelope
-      parameters: {attack: 54, decay: 68, gain: 128, release: 0, stereo: 0, sustain: 70}
-    - type: send
-      parameters: {amount: 26, port: 0, sendpop: 1, target: 202}