Convert to Glimmer, Typescript, & Glint

[lukemelia]

All components have been moved to Glimmer, which means that components that previously accepted a positional slug arg (freestyle-annotation, freestyle-usage, and freestyle-annotation) no longer support this.

[backspace]

followup: I saw the Glint configuration but none of the components are gts, is that the eventual desire?

[lukemelia]

followup: I saw the Glint configuration but none of the components are gts, is that the eventual desire?

@backspace perhaps. The number one goal is to enable components consuming Freestyle components to be gts.

[bertdeblock]

@lukemelia I think you can also update the PR description to mention that this closes https://github.com/chrislopresto/ember-freestyle/issues/653?

[lukemelia]

Released as 0.16.0-beta.0