The gjs/gts formats are a new pattern for authoring Ember components. This commit introduces support for these patterns to our build pipeline for core/plugins, and converts a handful of components to use the new format. It also introduces relevant updates to our linting config, and to our sample vscode configuration.
Co-authored-by: Godfrey Chan <godfreykfc@gmail.com>
Co-authored-by: Krystan HuffMenne <kmenne+github@gmail.com>
