Add HTML page templates
Add the templates files that generate the HTML pages for the UI. These templates should provide a reference for how the UI model can be arranged on the page. They also serve as the foundation for what the CSS will style.
There must be two top-level layouts, which go in the
The main layout should be partitioned into the following partial templates, which go in the
The 404 layout should reuse the following partial templates:
Any helpers needed to interpret the UI model should go into the
This issue also requires populating
preview-site-src/ui-model.yml with sample data for the templates to use.