Support running npm install without package.json

[yahavi]

• All tests have passed. If this feature is not already covered by the tests, new tests have been added.
• The pull request is targeting the dev branch.
• The code has been validated to compile successfully by running go vet ./....
• The code has been formatted properly using go fmt ./....

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Depends on:

• Support running npm install without package.json jfrog-cli-core#1002
• Support running npm install without package.json build-info-go#206

Allow running jf npm install <package-name> when there is no package.json existing in the working directory.

[github-actions]

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