Move to frostfs-node

Signed-off-by: Pavel Karpy <p.karpy@yadro.com>

cmd/frostfs-node/worker.go

@@ -0,0 +1,34 @@
+package main
+
+import (
+	"context"
+)
+
+type worker interface {
+	Run(context.Context)
+}
+
+type workerFromFunc struct {
+	fn func(context.Context)
+}
+
+func newWorkerFromFunc(fn func(ctx context.Context)) worker {
+	return &workerFromFunc{
+		fn: fn,
+	}
+}
+
+func (w *workerFromFunc) Run(ctx context.Context) {
+	w.fn(ctx)
+}
+
+func startWorkers(c *cfg) {
+	for _, wrk := range c.workers {
+		c.wg.Add(1)
+
+		go func(w worker) {
+			w.Run(c.ctx)
+			c.wg.Done()
+		}(wrk)
+	}
+}