feat(tracker): don't save instrument name in instrument files

The filename is used as the instrument name when it is loaded.

tracker/generate/clean_presets.go

@@ -0,0 +1,47 @@
+//go:build ignore
+// +build ignore
+
+package main
+
+import (
+	"fmt"
+	"io/fs"
+	"os"
+	"path/filepath"
+
+	"github.com/vsariola/sointu"
+	"github.com/vsariola/sointu/tracker"
+	"gopkg.in/yaml.v3"
+)
+
+func main() {
+	filepath.WalkDir("presets", func(path string, d fs.DirEntry, err error) error {
+		if err != nil {
+			return err
+		}
+		if d.IsDir() {
+			return nil
+		}
+		data, err := os.ReadFile(path)
+		if err != nil {
+			return nil
+		}
+		var instr sointu.Instrument
+		if yaml.Unmarshal(data, &instr) != nil {
+			fmt.Fprintf(os.Stderr, "could not unmarshal the preset file %v: %v\n", path, err)
+			return nil
+		}
+		tracker.RemoveUnusedUnitParameters(&instr) // remove invalid parameters
+		instr.Name = ""                            // we don't need the names in the preset files as they are derived from the file path
+		outData, err := yaml.Marshal(instr)
+		if err != nil {
+			fmt.Fprintf(os.Stderr, "could not marshal the preset file %v: %v\n", path, err)
+			return nil
+		}
+		if err := os.WriteFile(path, outData, 0644); err != nil {
+			fmt.Fprintf(os.Stderr, "could not write the preset file %v: %v\n", path, err)
+			return nil
+		}
+		return nil
+	})
+}