Rename msgpackpp->msgpack, merge device+protocol->wire, absorb picoserial into client

cmd/load/main.go

@@ -8,7 +8,6 @@ import (
 	"time"
 
 	"github.com/theater/picomap/lib/client"
-	"github.com/theater/picomap/lib/picoserial"
 	"github.com/theater/picomap/lib/picotool"
 )
 
@@ -35,17 +34,17 @@ func run(buildDir string) error {
 		return fmt.Errorf("build failed: %w", err)
 	}
 
-	dev, err := picoserial.FindDevice()
+	devs, err := client.ListSerial()
 	if err != nil {
 		return err
 	}
-	if dev != "" {
+	if len(devs) > 0 {
+		dev := devs[0]
 		fmt.Printf("Sending PICOBOOT request to %s...\n", dev)
-		t, err := picoserial.Open(dev)
+		c, err := client.NewSerial(dev, 2*time.Second)
 		if err != nil {
 			return err
 		}
-		c := client.New(t, 2*time.Second)
 		err = c.PICOBOOT()
 		c.Close()
 		if err != nil {