Add minifier tool (#4)

cmd/main.go

@@ -0,0 +1,29 @@
+package main
+
+import (
+	"os"
+
+	"github.com/go-toolsmith/minformat"
+)
+
+func main() {
+	if len(os.Args) != 2 {
+		panic("needs 1 argument: file to process")
+	}
+
+	filename := os.Args[1]
+
+	b, err := os.ReadFile(filename)
+	if err != nil {
+		panic(err)
+	}
+
+	res, err := minformat.Source(b)
+	if err != nil {
+		panic(err)
+	}
+
+	if _, err := os.Stdout.Write(res); err != nil {
+		panic(err)
+	}
+}