Update default settings in html-closing-bracket-newline

[michalsnik]

This PR introduces update to default setting for html-closing-bracket-newline, to force new line in case of multiline elements.

{
  "singleline": "never",
  "multiline": "always"
}

The reason behind this update, is that in case of multiline elements, having closing tag on a separate line makes the code more readable. Especially when there are many elements in the template. We could compare it to JS objects. We don't write:

const a = {
  key: 'value' };

but rather:

const a = {
  key: 'value'
};

Incorrect code regarding new setting:

<SomeComponent
  class="lorem"
  :lorem="ipsum" />

Correct code:

<SomeComponent
  class="lorem"
  :lorem="ipsum"
/>

singleline setting stays as is, forcing devs to keep closing tag at the same line.