Support ps subcommand on podcvd

[0405ysj]

Suggested output format of cvd ps:

$ cvd ps 2>/dev/null
GROUPS   NAMES   ID   STATUS    CREATED               ADB_SERIAL       WEB_ACCESS                                                   
cvd_1    1       1    Running   2026-07-10 07:56:55   localhost:6520   https://localhost:1443/devices/cvd_1-1-1/files/client.html

Suggested output format of podcvd ps:

GROUPS   NAMES   ID   STATUS    CREATED               ADB_SERIAL           WEB_ACCESS
cvd_1    1       1    Running   2026-07-13 01:16:15   192.168.112.1:6520   https://192.168.112.1:11443/devices/cvd_1-1-1/files/client.html
cvd_2    1       1    Running   2026-07-13 01:16:27   192.168.112.2:6520   https://192.168.112.2:11443/devices/cvd_2-1-1/files/client.html

Context: b/530777084

[rickgonzalez]

Sharing an explanation of this PR I did during dev/test of Lenzon - Hope you find it helpful.
https://www.lenzon.ai/viewer/cmrb01fsy0000jcwzlwurvng2?voice=google-chirp3

[0405ysj]

@dxapd Could I get the review for the modification on cvd ps as we talked on b/530777084? Now I'm ready for the review. Thanks!

[0405ysj]

@k311093 @ikicha Could I get review for the modification on podcvd code for ps subcommand support? Thanks!