Setup HTMLBars version of script template bootstrapping.
Move component invocation test into ember-htmlbars.
Move group test into ember-htmlbars package.
Merge pull request #9662 from rwjblue/htmlbars-component-invocation

Move component invocation test into ember-htmlbars.
Merge pull request #9661 from rwjblue/htmlbars-bootstrap

Setup HTMLBars version of script template bootstrapping.
Enable Handlebars compat mode when HTMLBars is enabled.