Minor refactor

* Move namegen to seperate file
* Simplify Makefile

namegen.go

@@ -0,0 +1,35 @@
+package main
+
+import (
+	"crypto/rand"
+	"fmt"
+	"sync/atomic"
+	"time"
+)
+
+type nameGen struct {
+	prefix  string
+	counter atomic.Uint64
+}
+
+func NewNameGen() *nameGen {
+	currentTime := time.Now().Unix()
+	randBytes := make([]byte, 8)
+	_, err := rand.Read(randBytes)
+	if err != nil {
+		panic(err)
+	}
+	alpha := []byte("ABCDEFGHIJKLMNOPQRSTUVWXYZ")
+	uniqRunID := ""
+	for _, b := range randBytes {
+		uniqRunID += string(alpha[int(b)%len(alpha)])
+	}
+	return &nameGen{
+		prefix:  fmt.Sprintf("%d-%s", currentTime, uniqRunID),
+		counter: atomic.Uint64{},
+	}
+}
+
+func (n *nameGen) Next() string {
+	return fmt.Sprintf("%s-%d", n.prefix, n.counter.Add(1))
+}