Port rules from ember-template-lint

[EvgenyOrekhov]

ember-template-lint has many rules that can be ported to HTML ESLint, such as:

• no-abstract-roles
• no-aria-hidden-body
• no-duplicate-landmark-elements
• no-heading-inside-button
• no-invalid-role
• no-nested-interactive
• no-nested-landmark
• and a few others

[yeonjuan]

@EvgenyOrekhov Thanks!! I have never thought about referring to the "ember eslint plugin" but it seems to have many rules fitted in HTML. In addition to your suggestions, I found some useful rules.

• require-button-type
• no-multiple-empty-lines
• no-accesskey-attribute

[EvgenyOrekhov]

Also these:

• no-redundant-landmark-role
• no-trailing-spaces
• no-whitespace-for-layout
• require-form-method
• require-input-label
• table-groups

[yeonjuan]

Progress

Ready to implement.

• [x] (#56) - no-abstract-roles
• [x] (#57) - no-aria-hidden-body
• [x] (#55) - require-button-type
• [x] (#60) - no-multiple-emply-lines
• [x] (#63) - no-accesskey-attrs
• [x] (#107) - no-trailing-spaces
• [ ] no-redundant-landmark-role
• [ ] no-duplicate-landmark-elements
• [ ] no-nested-interactive
• [ ] no-nested-landmark

Need to Triage

• no-heading-inside-button
• no-invalid-role
• no-whitespace-for-layout
• require-form-method
• require-input-label
• table-groups