Add consistent -debug and -debug.port flags to commands (#7816)

* Add consistent -debug and -debug.port flags to commands

Add -debug and -debug.port flags to weed master, weed volume, weed s3,
weed mq.broker, and weed filer.sync commands for consistency with
weed filer.

When -debug is enabled, an HTTP server starts on the specified port
(default 6060) serving runtime profiling data at /debug/pprof/.

For mq.broker, replaced the older -port.pprof flag with the new
-debug and -debug.port pattern for consistency.

* Update weed/util/grace/pprof.go

Co-authored-by: gemini-code-assist[bot] <176961590+gemini-code-assist[bot]@users.noreply.github.com>

---------

Co-authored-by: gemini-code-assist[bot] <176961590+gemini-code-assist[bot]@users.noreply.github.com>

weed/command/master.go

@@ -69,6 +69,8 @@ type MasterOptions struct {
 	raftBootstrap      *bool
 	telemetryUrl       *string
 	telemetryEnabled   *bool
+	debug              *bool
+	debugPort          *int
 }
 
 func init() {
@@ -98,6 +100,8 @@ func init() {
 	m.raftBootstrap = cmdMaster.Flag.Bool("raftBootstrap", false, "Whether to bootstrap the Raft cluster")
 	m.telemetryUrl = cmdMaster.Flag.String("telemetry.url", "https://telemetry.seaweedfs.com/api/collect", "telemetry server URL to send usage statistics")
 	m.telemetryEnabled = cmdMaster.Flag.Bool("telemetry", false, "enable telemetry reporting")
+	m.debug = cmdMaster.Flag.Bool("debug", false, "serves runtime profiling data via pprof on the port specified by -debug.port")
+	m.debugPort = cmdMaster.Flag.Int("debug.port", 6060, "http port for debugging")
 }
 
 var cmdMaster = &Command{
@@ -121,6 +125,9 @@ var (
 )
 
 func runMaster(cmd *Command, args []string) bool {
+	if *m.debug {
+		grace.StartDebugServer(*m.debugPort)
+	}
 
 	util.LoadSecurityConfiguration()
 	util.LoadConfiguration("master", false)