docs: Add trace forwarder doc reference
Add a pointer to the trace forwarder README to the top-level README.
@@ -95,6 +95,11 @@ inside the virtual machine). This shim is required to be compliant with the
expectations of the [OCI runtime
specification](https://github.com/opencontainers/runtime-spec).
+##### Trace forwarder
+
+The [`kata-trace-forwarder`](src/trace-forwarder) is a component only used
+when tracing the [agent](#agent) process.
+
#### Additional
##### Hypervisor
