Improve workflow of creating initial project

[alexlafroscia]

• Allow the default app name to be provided as an argument
• Attempt to merge with an existing package.json file if one exists
  • If it does exist, try to use the project name in this file as the initial component name
• Generate a default description using the initial component name that the user provides
• Automatically add basic esdoc configuration, if the default isn't enough (check)
• Add ESLint configuration