message: feat(tracing-js): add serviceName for Tracer
diff: @@ -25,9 +25,9 @@ export class Tracer {
  | null = null;
  private static _spans: Array<api.Span> = [];
  - static enableTracing(tracerName: string): void {
  + static enableTracing(tracerName: string, serviceName = "Polywrap"): void {
  this.traceEnabled = true;
  - this._initProvider();
  + this._initProvider(serviceName);
  if (this._provider) {
  this._tracer = this._provider.getTracer(tracerName) as otTracer;
  @@ -129,7 +129,7 @@ export class Tracer {
  };
  }
  - static _initProvider(): void {
  + static _initProvider(serviceName: string): void {
  if (this._provider) return;
  if (typeof window === "undefined") {
  @@ -140,7 +140,11 @@ export class Tracer {
  // Configure span processor to send spans to the exporter
  this._provider.addSpanProcessor(
  - new SimpleSpanProcessor(new ZipkinExporter())
  + new SimpleSpanProcessor(
  + new ZipkinExporter({
  + serviceName: serviceName,
  + })
  + )
  );
  this._provider.register();
  