fix: update deprecated torchvision make_grid API and resolve DataLoader worker import failures

[Fahmid-Arman]

What type of PR is this?
/kind bug

What this PR does / why we need it:
The ERFNet training pipeline crashed on modern Python environments due to two separate execution failures involving deprecated APIs and subprocess module imports.

• Renamed the deprecated range keyword argument to value_range across all torchvision.utils.make_grid() calls in utils/summaries.py to restore compatibility with torchvision >= 0.8.0.
• Updated self.workers = 0 within TrainArgs in utils/args.py to force PyTorch DataLoader to run in the main process. This prevents worker subprocesses from crashing with ModuleNotFoundError due to lost sys.path modifications.

Which issue(s) this PR fixes:
Fixes #472

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This pull-request has been approved by: Fahmid-Arman
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[gemini-code-assist]

Code Review

This pull request updates make_grid calls in summaries.py to use value_range instead of range and sets the default number of workers to 0 in args.py. The reviewer recommends making the number of workers configurable via kwargs instead of hardcoding it to 0 to avoid bottlenecking training performance.

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[Fahmid-Arman]

Feedback addressed:

• Made the DataLoader workers parameter configurable via kwargs to support multi-process loading overrides while keeping 0 as the safe default.

/assign @jaypume