Prefer pathlib to os.path in launch files

[srmainwaring]

Update launch files to consistently use pathlib rather than os.path.

[SrijaneeBiswas]

I can take this up. What would be the acceptance criteria for this issue?

I have a Ubuntu 22.04/ROS Humble setup.

[Ryanf55]

Hello - if you are still interested, a pull request is surely welcome.

Everwhere you see any call to os.path, replace it with pathlib.Path equivalent.
Then, test all the modified files. If you can, put some screenshots or logs in the PR to demonstrate it.
Finally, submit the PR.

As an example, see here:
ethz-asl/grid_map_geo#56

[pulak-gautam]

Hi @Ryanf55 , I have made the changes in all the launch files as you mentioned. Could you please let me know what logs should I be putting in the PR, does launch.log with verbosity to INFO suffice?

[Ryanf55]

Yes, that sounds sufficient. I'll test the changes locally before merge too.

[pulak-gautam]

Hi, I have put up a pr (#47) with changes following your instructions. Kindly review the same.
Thank you for your time.