message: docs/cli: add some opinions
diff: @@ -66,6 +66,22 @@ the CLI without having to take a wide API surface into account. Allowing us to
  more quickly iterate and improve the tooling, as well more easily keeping
  dependencies up to date.
  +## Opinions
  +
  +In no particular order, this is a list of opinions and goals that guide the
  +design and development of the Backstage CLI:
  +
  +- All you need for development is `yarn start`, there should be no need to
  + manually build packages or run other tasks on the side.
  +- Development experience comes first. The toolchain is optimized for keeping
  + development smooth, rather than making it easy to for example build and
  + publish packages.
  +- TypeChecking and linting is left for editors and CI. Most code editors provide
  + tooling for these checks, and running them again during compilation would slow
  + down iteration speed and consume more resources.
  +- Backstage is run in modern browsers. We keep transpilation lightweight and
  + rely on modern technology such as HTTP/2 to optimize frontend speed.
  +
  ## Glossary
  - **Package** - A package in the Node.js ecosystem, often published to a package
  