Provide support for more source map types in webpack

[vmutafov]

Currently running a webpacked application on android doesn't work if using source maps configuration different than "inline-source-map" or "none". It would be good for developers to be able to use other source map types as described in here: https://webpack.js.org/configuration/devtool/ . To provide this feature it's possible that changes should be made in the js_parser.js logic which is part of the static binding generator process.