Model card previews

[rahulkgupta]

• assets now reads from catalog.json and will create mixins from there.
• catalog.json values contains a src field which is used for both glb and images.

todo

• remove images from here.

[vincentfretin]

You should use data-category here unless you're creating a category component.

[rahulkgupta]

i was trying to maintain existing functionality

  function addCategoryNamesToMixins(html, categoryName) {
    const parser = new DOMParser();
    const doc = parser.parseFromString(html, 'text/html');
    const mixinNodes = doc.querySelectorAll('a-mixin');
    mixinNodes.forEach((mixinNode) => {
      mixinNode.setAttribute('category', categoryName);
    });
    return doc.documentElement.innerHTML;
  }