Added config extractor for new npm publish impl

[fluxxBot]

• All tests passed. If this feature is not already covered by the tests, I added new tests.
• All static analysis checks passed.
• This pull request is on the dev branch.
• I used gofmt for formatting the code before submitting the pull request.

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depends on:

1. client-go - Added util to create build info from search results jfrog-client-go#1109
2. cli - Support npm publish using native npm client with .npmrc via --use-npmrc flag jfrog-cli#2952
3. cli-artifactory - New npm publish impl jfrog-cli-artifactory#63