Read --watch and --no-stats options from webpack configuration files

[marcofugaro]

Explain the problem

Currently, you can pass the --watch and --no-stats options from CLI or Node, but it would me much easier if parallel-webpack could infer those options from the webpack config provided.

Expected Behaviour

For example the --watch flag could be inferred from the watch option.

The --no-stats option would be enabled if there was performance: false in the webpack config object. This turns off all performance hints.

Provide your Environment details

• Node version: 14.5.0

• Operating System: macOS Catalina

• webpack version: 4.44.2

• parallel-webpack version: 2.6.0