Make allow customize `/dist` naming from consumer's package.

Created by: Kyr

Motivation. For the some reasons I would to have ability to customize naming in /dist. postbuild script approach not very comfortable and needs an appropriate modification of manifestos.

This approach use optional naming schema configuration in consumer's package.json, for example "flat" structure:

...
  "distNaming": {
    "output": {
      "development": {
        "filename": "bundle.js",
        "chunkFilename": "[name].chunk.js"
      },
      "production": {
        "filename": "[name].[contenthash:8].js",
        "chunkFilename": "[name].[contenthash:8].chunk.js"
      }
    },
    "media": {
      "filename": "[name].[hash:8].[ext]"
    },
    "files": {
      "filename": "[name].[hash:8].[ext]"
    },
    "css": {
      "filename": "[name].[contenthash:8].css",
      "chunkFilename": "[name].[contenthash:8].chunk.css"
    }
  }
...

Such config applied to default naming schema and then used in webpack's config factory.