Refactor webpack.config.dev.js and webpack.config.prod.js to use a base configuration file

[adaam2]

When you eject create-react-app, it creates separate webpack configuration files for production and development. In actuality, these files share a lot of commonality. The task is to refactor these configuration files to use a base configuration file called webpack.config.base.js.

An example of the kind of thing we are aiming for can be found at https://gist.github.com/ericclemmons/40a2783313d157d8b448. Of particular note is the merge method that is defined and exported from this module and used in the other configuration files to merge in environment-specific webpack configs

[sanketsingh24]

Shall I work on this issue?

[adaam2]

@sanketsingh24 Sure, feel free