Improve glob support in filestream

[ph]

Place holder, more to come, but a few pointers in the meantime.

• Improve wildcard support and walking file path.
• Case sensitivity on windows
• better support of exclude files on windows.

[botelastic]

Hi!
We just realized that we haven't looked into this issue in a while. We're sorry!

We're labeling this issue as Stale to make it hit our filters and make sure we get back to it as soon as possible. In the meantime, it'd be extremely helpful if you could take a look at it as well and confirm its relevance. A simple comment with a nice emoji will be enough :+1.
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[botelastic]

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