NioPathDeserializer improvement

[remal]

1. Support Windows paths on Windows OS
2. Handle all exceptions, not only URISyntaxException
3. If FileSystemProvider can't be found, try to find one using the current thread's context class loader

[cowtowncoder]

First of all, thank you for contributing this improvement: although I am not familiar with Windows-path handling I trust it makes sense.

Before I merge this to be included in 2.9.7, just one process thing: we need a CLA, from:

https://github.com/FasterXML/jackson/blob/master/contributor-agreement.pdf

and the usual way is to print it, fill & sign, scan, email to info at fasterxml dot com.
Once this is done (only needs to be done once for all Jackson project contributions), I'll merge the patch.

[remal]

Hello,

I've already done it for FasterXML/jackson-modules-java8#66

[cowtowncoder]

Ah. My bad. Thanks for reminder.

[cowtowncoder]

Thank you for contribution; this will be included in 2.9.7