Static properties-based templates aren't documented

In https://aurelia.io/blog/2018/06/24/aurelia-release-notes-june-2018/#new-templating-features, new support was added to define templates using a class with `$view`, `$resource`, `bindable` and other properties directly set.

Would be good to have a section added to the templating docs (https://aurelia.io/docs/templating) for this, so it's more discoverable.

Start with the templating documentation and the linked June 2018 release notes to understand the static properties-based template feature, including `$view`, `$resource`, and `bindable`. Add a discoverable section explaining the feature and its supported properties, using the release notes as the reference for what is documented.

Written by the indexing model from the issue text.