Added bind operator for Option

[ratsclub]

Proposed Changes

This PR introduces the bind (>>=) for Option.

Types of changes

What types of changes does your code introduce to FsToolkit.ErrorHandling?
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• New feature (non-breaking change which adds functionality)

Checklist

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• Build and tests pass locally
• I have added tests that prove my fix is effective or that my feature works (if appropriate)
• I have added necessary documentation (if appropriate)

Further comments

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[TheAngryByrd]

Thanks a ton!

[ratsclub]

Thanks for the fast merge!

Do you think you could release a new version with this addition? We introduced this because we are currently writing some hairy code and this would help a lot!

[TheAngryByrd]

Done :)