fix(sdk): export getTraceloopTracer for direct tracer access (#686)

Author: nirga

packages/traceloop-sdk/src/lib/node-server-sdk.ts

@@ -34,6 +34,7 @@ export { Experiment } from "./client/experiment";
 export { Evaluator } from "./client/evaluator";
 export { initialize, getClient } from "./configuration";
 export { forceFlush } from "./tracing";
+export { getTraceloopTracer } from "./tracing/tracing";
 export * from "./tracing/decorators";
 export * from "./tracing/manual";
 export * from "./tracing/association";

packages/traceloop-sdk/src/lib/tracing/tracing.ts

@@ -12,6 +12,8 @@ export const getTracer = () => {
   return trace.getTracer(TRACER_NAME);
 };
 
+export const getTraceloopTracer = getTracer;
+
 export const getEntityPath = (entityContext: Context): string | undefined => {
   const path = entityContext.getValue(ENTITY_NAME_KEY);