feat(backend/cgroup-skb): support for displaying thread ID and name in cgroup-skb output

[mozillazg]

$ sudo ptcpdump -i any --backend cgroup-skb

10:18:26.846884 ens33 firefox.113278 Out IP xxx.xxx.xxx.35102 > xxx.xxx.xxx.80: Flags [P.], seq xx:xx, ack xx, win xx, length xx, Thread [Socket Thread.113438], ParentProc [xfce4-panel.49607]

$ sudo ptcpdump -i any --backend cgroup-skb -v

10:18:26.846884 ens33 Out IP (tos 0x0, ttl 64, id 57734, offset 0, flags [DF], proto TCP (6), length 478)
    xxx.xxx.xxx.35102 > xxx.xxx.xxx.80: Flags [P.], cksum 0x3381, seq xx:xx, ack xx, win 64240, length 438
    Process (pid 113278, cmd /snap/firefox/5437/usr/lib/firefox/firefox, args /snap/firefox/5437/usr/lib/firefox/firefox)
    Thread (tid 113438, name Socket Thread)
    ParentProc (pid 49607, cmd /usr/bin/xfce4-panel, args xfce4-panel --display :0.0 --sm-client-id xxxx)

closes #213

[mozillazg]

cc @ReubenM wdyt about output like this.

[ReubenM]

cc @ReubenM wdyt about output like this.

Very nice!!

[mozillazg]

@ReubenM You can download the testing version from https://github.com/mozillazg/ptcpdump/actions/runs/12441512058 (under the Artifacts section). Please feel free to share your feedback.