LuxonisParser - RoboFlow URL Support

[kozlov721]

• Added support for downloading data directly from RoboFlow when using LuxonisParser
• URL is expected to look like: roboflow://workspace/project/version/format
• Added ROBOFLOW_API_KEY to luxonis_ml.utils.Environ

Example:

luxonis_ml data parse 'roboflow://joseph-nelson/thermal-dogs-and-people/6/voc' -n thermal-dogs -t voc

[codecov]

Codecov Report

Attention: Patch coverage is 47.05882% with 18 lines in your changes missing coverage. Please review.

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✅ All tests successful. No failed tests found.

Files with missing lines	Patch %	Lines
luxonis_ml/data/parsers/luxonis_parser.py	30.76%	18 Missing ⚠️

Additional details and impacted files

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[klemen1999]

LGTM

[tersekmatija]

LGTM, some minor comments to minimize the required dependencies.