Add clientID and clientVersion to the diagnostics page.

pkg/analysis_server/lib/src/analysis_server.dart

Index: pkg/analysis_server/lib/src/analysis_server.dart
diff --git a/pkg/analysis_server/lib/src/analysis_server.dart b/pkg/analysis_server/lib/src/analysis_server.dart
index 546859f79381a13a9be471321679340aa3c4446a..54923975de97af1ad263557f4e3277493077cf26 100644
--- a/pkg/analysis_server/lib/src/analysis_server.dart
+++ b/pkg/analysis_server/lib/src/analysis_server.dart
@@ -1927,6 +1927,10 @@ class AnalysisServerOptions {
   bool useAnalysisHighlight2 = false;
   String fileReadMode = 'as-is';
   String newAnalysisDriverLog;
+
+  String clientId;
+  String clientVersion;
+
   // IDE options
   bool enableVerboseFlutterCompletions = false;
 }