feat(deployment): support Heroku

[cball]

This allows deploying to Heroku. It includes everything from server and database config to pipelines.

Changes

• dont format ejs files with prettier
• update README
• adds inquirer to prompt user for values
• kicks off the workflow by asking user to past the git url
• deploy to Heroku
  • verify login
  • optionally create apps, databases, and pipelines
  • update postinstall message to use chalk and give better direction
• split docs into ci, deployment, workflow, faq, etc
• reworks simple template strings to use ejs
• pass chalk function to ejs templates to render colors and bold
• add ejs-lint dependency to lint templates (will be used in future tests as well)

Screenshots

New CLI:

Resulting pipeline:

Gif of questions:

Checklist

• Requires dependency update?
• Generating a new app works

Fixes #30

[github-actions]

🎉 This PR is included in version 1.5.0 🎉

The release is available on:

• npm package (@next dist-tag)
• GitHub release

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