analyzer/NPM: Add support for ignore-scripts parameter when npm ci is used

[rockebee]

Introduced with #273, the "--ignore-scripts" option is used to prevent execution of any build scripts of the node.js project or its dependencies. However, this flag is not (yet) used for npm ci cases (introduced with #877), but IMHO it is totally valid to do so as same reasoning applies here (prevent execution of arbitrary build scripts + high risk of failing because the scripts could try to compile native code).

Caveat: ignore-scripts was introduced with NPM 5.7.0 (together with npm ci itself), but was not supported in NPM versions 7.0.0 < 7.4.0 (link)

If there are no objections, I would be able to prepare a PR for this.