ISTWCMS-5631: code standards - css linting for the src/patterns/01-core folder

src/patterns/01-core/elements/_blockquote.scss

src/patterns/01-core/elements/_definition-list.scss

src/patterns/01-core/elements/_details.scss

src/patterns/01-core/elements/_fieldset.scss

src/patterns/01-core/elements/_figure.scss

src/patterns/01-core/elements/_form.scss

src/patterns/01-core/elements/_html.scss

src/patterns/01-core/elements/_inline-elements.scss

src/patterns/01-core/elements/_input.scss

src/patterns/01-core/elements/_label.scss

src/patterns/01-core/elements/_menu.scss

src/patterns/01-core/elements/_option.scss

src/patterns/01-core/elements/_ordered-list.scss

src/patterns/01-core/elements/_select.scss

src/patterns/01-core/elements/_table.scss

src/patterns/01-core/elements/_textarea.scss

src/patterns/01-core/elements/_unordered-list.scss

src/patterns/01-core/mixins/_button.scss

src/patterns/01-core/mixins/_headings.scss

src/patterns/01-core/mixins/_link.scss