Added path parameter parser for Open API spec file imports

[azvyae]

Just added simple path parameter parser that includes these features:

• Allow import path parameter automatically to Restfox by reading Open API JSON/YAML spec file.
• Supports examples, so if the example property does exist inside the parameters.schema property, the parser will automatically includes it as a value in Restfox.

This PR just added js-yaml package to be able read and convert yaml file into js object. The purpose of this feature addition is because it is indeed mentioned in the #51 issue.

Before, the insomnia-importers converts the {...} path parameter into global variable, and doesn't support import path params automatically:

After (the Path Parameters automatically imported):

Feel free to ask.

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[flawiddsouza]

Thanks for the PR. Just checked with different openapi v2 and v3 exports and everything seems to be working fine.

Just tiny formatting fixes are required.

Please add back the new lines that were removed, as it's not related to the implementation.

Please add an empty new line at the end here. I think npm run lint-fix should also do this for you.

[azvyae]

Done, fixed