Add autofix to block-opening-brace-newline-after

[ota-meshi]

Which issue, if any, is this issue related to?

e.g. "Closes #000" or "None, as it's a documentation fix."

block-opening-brace-newline-after in #2829

Is there anything in the PR that needs further explanation?

e.g. "No, it's self explanatory."

ex.

• option: always***

  code:

  a { color: pink; }

  fixed:

  a {
   color: pink; }

• option: never-multi-line

  code:

  a {
  color: pink;
  background: orange; }

  fixed:

  a {color: pink;
  background: orange; }

In order to solve the problem of indentation due to newline insertion, the indentation processing was modified to be done at the last.

[hudochenkov]

Autofixing looks good.

I'm not sure what problem with indentation you're talking about. Anyway, it's better to do it in another PR. Could you remove indentation related changes from this PR and send them as another PR, please? Include before/after, so we could see what the problem is. Add tests for this problem.

[ota-meshi]

@hudochenkov Thank you for checking!
I reverted the change of indentation. so please check again.

[hudochenkov]

👍

[jeddy3]

LGTM

[jeddy3]

• Added: block-opening-brace-newline-after autofix (#3441).