add job id in MetricsRecordingHeader for chat log re-injection (#1646)

* add job id in MetricsRecordingHeader for chat log re-injection

* generated protobuf

* Update MetricsRecordingHeader with job id

Add job id in MetricsRecordingHeader for chat log re-injection

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Co-authored-by: github-actions <41898282+github-actions[bot]@users.noreply.github.com>

Author: chenghao-mou

.changeset/crisp-cougars-tie.md

@@ -0,0 +1,5 @@
+---
+"@livekit/protocol": patch
+---
+
+add job id in MetricsRecordingHeader for chat log re-injection

livekit/livekit_metrics.pb.go

@@ -96,4 +96,5 @@ message MetricsRecordingHeader {
   map<string, string> room_tags = 5;
   string room_name = 6;
   google.protobuf.Timestamp room_start_time = 7;
+  string job_id = 8;
 }