Yes, it is now possible thanks to Matlab Online. First, you would need a Mathworks account, you may have one if you already have a Matlab license.
Then go to the OSCAR Gitlab page and at the bottom of the readme file, you will find a button named Open in MATLAB Online:
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It should open directly a Matlab window in your browser with git repository installed:
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Then one can navigate in the folder examples and run them with the green arrow on top:
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Et voilĂ !
(to be transparent you only have a monthly free number of calculation hours with Matlab online but it is still an amazing product)