add small application which enumerates the hid devices

cmd/hid-enum/.gitignore

@@ -0,0 +1,2 @@
+/hid-enum
+/hid-enum.exe

cmd/hid-enum/hid_enum.go

@@ -0,0 +1,33 @@
+package main
+
+import (
+	"flag"
+	"fmt"
+
+	"github.com/bearsh/hid"
+)
+
+var (
+	vid = flag.Int("vid", 0, "USB VID")
+	pid = flag.Int("pid", 0, "USB PID")
+)
+
+func main() {
+	flag.Parse()
+
+	d := hid.Enumerate(uint16(*vid), uint16(*pid))
+
+	for _, i := range d {
+		fmt.Printf("- Path: %v\n", i.Path)
+		fmt.Printf("  VendorID: %v\n", i.VendorID)
+		fmt.Printf("  ProductID: %v\n", i.ProductID)
+		fmt.Printf("  Release: %v\n", i.Release)
+		fmt.Printf("  Serial: %v\n", i.Serial)
+		fmt.Printf("  Manufacturer: %v\n", i.Manufacturer)
+		fmt.Printf("  Product: %v\n", i.Product)
+		fmt.Printf("  UsagePage: %v\n", i.UsagePage)
+		fmt.Printf("  Usage: %v\n", i.Usage)
+		fmt.Printf("  Interface: %v\n", i.Interface)
+		fmt.Printf("  BusType: %v\n", i.BusType)
+	}
+}