chore: Adds bundle analyzer to monitor size of dependencies

[phantomjinx]

• Provides a treemap served via its own webserver to display the relative sizes of the constituent components of the app

• package.json

  • Adds two commands that execute different analyses of the components. Both execute using the dev webpack-config but the second uses the 'production' mode to demonstrate what the chunk size looks like in the final build

• webpack.config.dev.js

  • Adds the bundle analyzer plugin and keeps the prod version clean of developer monitoring plugins