Option/ValueOption.tryGetValue and reduce testing complexity

[TheAngryByrd]

Proposed Changes

Adds tryGetValue to Option/ValueOption interface as a way to interact with anything that uses the TryGetValue pattern, specifically for dictionaries.

Also reducing the complexity of the testing section but using dotnet test and using npm-run-all to handle multiple test projects with Fable.

Types of changes

What types of changes does your code introduce to MyLib.1?
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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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