Ember builds with non-portable addon bundles

[habdelra]

Fixes #CS-207. This update adds support for ember builds with non portable bundles. Note that this currently relies upon a hacked version of embroider. To use this:

1. Yarn link the @embroider/core and @embroider/compat packages from the catalogjs-experiment branch of the https://github.com/ef4/snowpack-experiment repo to the packages/ember-app workspace in this repository. (This step eventually goes away after some key upstream embroider changes are made available).

2. Update the packages/src/core/babel-plugin-adjust-imports.ts#adjustSpecifier method to indicate if the build is using the file daemon or not (runningInsideFileDaemon variable), and recompile the TypeScript.

there is a new yarn script for serving the ember app:
yarn serve:ember-app (for hosted pkgs)
yarn serve:ember-app-local-pkgs (for local pkgs)

This will both start ember s and run the file daemon pointed to the embroider stage 2 outputs of the ember build.
(additionally the old test-app serving has been moved to yarn serve:test-app

To generate the ember-app bundles, there is a yarn script, yarn ember-acceptance-test that will generate the bundles for the ember-app. eventually this will be the full acceptance tests for teh ember app after the next phase of work is completed. Make sure the hacked embroider is set to runningInsideFileDaemon = false and TS compiled before making the bundles.