[#125] ir: Reconfigure pprof and metrics on SIGHUP

Signed-off-by: Anton Nikiforov <an.nikiforov@yadro.com>

cmd/frostfs-ir/pprof.go

@@ -0,0 +1,21 @@
+package main
+
+import (
+	httputil "git.frostfs.info/TrueCloudLab/frostfs-node/pkg/util/http"
+)
+
+const (
+	pprofEnabledKey         = "pprof.enabled"
+	pprofAddressKey         = "pprof.address"
+	pprofShutdownTimeoutKey = "pprof.shutdown_timeout"
+)
+
+func newPprofComponent() *httpComponent {
+	return &httpComponent{
+		name:               "pprof",
+		enabledKey:         pprofEnabledKey,
+		addressKey:         pprofAddressKey,
+		shutdownTimeoutKey: pprofShutdownTimeoutKey,
+		handler:            httputil.Handler(),
+	}
+}