GetLogs support for Timestamps

[antoinetran]

Issue:
Currently, to get logs with Timestamps options will make a failure: unsupported option req.Opts.Timestamps and no logs are generated.

Expected:
Doing kubectl logs [pod] --since ... will result in logs honoring the since option.

Cause:
To be implemented!!

Proposition of fix:
Docker logs to a JSON file containing

{"log":"\r\n","stream":"stdout","time":"2025-01-27T18:00:11.914339229Z"}
{"log":"\u001b[?2004hbash-5.2# \r\n","stream":"stdout","time":"2025-01-27T18:00:11.978278586Z"}
{"log":"\u001b[?2004l\r\u001b[?2004hbash-5.2# echo ok\r\n","stream":"stdout","time":"2025-01-27T18:00:14.310362866Z"}
{"log":"\u001b[?2004l\rok\r\n","stream":"stdout","time":"2025-01-27T18:00:14.310851485Z"}

InterLink Slurm Plugin should do the same, in order to not lose the timestamp information.
Currently, the stdout and stderr of a container is written to [container_name].out. Instead, it should be written to [container_name]-log.json

However, currently only bash is expected as prerequisite. This feature might requires python3 and json module.

[dciangot]

@antoinetran what about the slurm plugin converting the log to json on the fly? So without requiring additional packages.