Add CI status and latest release badges

Signed-off-by: Martynas Pumputis <[email protected]>

Author: brb

README.md

@@ -1,5 +1,8 @@
 # pwru (packet, where are you?)
 
+[![Build and Test](https://github.com/cilium/pwru/actions/workflows/test.yml/badge.svg?branch=main)](https://github.com/cilium/pwru/actions/workflows/test.yml)
+[![GitHub Release](https://img.shields.io/github/release/cilium/pwru.svg?style=flat)](https://github.com/cilium/pwru/releases/latest)
+
 ![logo](logo.png "Detective Gopher is looking for packet traces left by eBPF bee")
 
 `pwru` is an [eBPF](https://ebpf.io)-based tool for tracing network packets in