Introduce some new commands and reduce their names to mostly single letter

modules/midi/src/main/kotlin/io/smnp/ext/midi/MidiModule.kt

@@ -1,14 +1,16 @@
 package io.smnp.ext.midi
 
 import io.smnp.environment.Environment
-import io.smnp.ext.provider.NativeModuleProvider
 import io.smnp.ext.midi.function.MidiFunction
 import io.smnp.ext.midi.function.MidiHelpFunction
 import io.smnp.ext.midi.lib.midi.Midi
+import io.smnp.ext.provider.HybridModuleProvider
 import org.pf4j.Extension
 
 @Extension
-class MidiModule : NativeModuleProvider("smnp.audio.midi") {
+class MidiModule : HybridModuleProvider("smnp.audio.midi") {
+   override fun files() = listOf("command.mus")
+
    override fun functions() = listOf(MidiFunction(), MidiHelpFunction())
 
    override fun dependencies() = listOf("smnp.music")

modules/midi/src/main/resources/command.mus

@@ -0,0 +1,3 @@
+function i(instrument: int) {
+    return { instrument -> instrument };
+}