Enable Glint by default

As part of the TS blueprint. We may not want to do this until we make <template> the default, since without <template>, it requires some serious hoop-jumping with the template registries.
(Optional, needs more consensus from the rest of the community) Enable Glint as part of the JS blueprint, so that everyone gets the language server benefits. This could ultimately obviate the need for ember-language-server.

Blocked on ember-data types coming out of canary

No longer blocked on ember-data, back to blocked on Glint

This can probably be marked as complete now, we have it as part of the official extension pack and enabled by default.

Navigation Menu