Enable control_structure_braces

[paulbalandan]

Description

$ vendor/bin/php-cs-fixer describe control_structure_braces        
Description of control_structure_braces rule.
The body of each control structure MUST be enclosed within braces.

Fixing examples:
 * Example #1.
   ---------- begin diff ----------
   --- Original
   +++ New
   @@ -1,2 +1,2 @@
    <?php
   -if (foo()) echo 'Hello!';
   +if (foo()) { echo 'Hello!'; }

   ----------- end diff -----------

Checklist:

• Securely signed commits
• Component(s) with PHPDoc blocks, only if necessary or adds value
• Unit testing, with >80% coverage
• User guide updated
• Conforms to style guide

[MGatner]

These all look good to me. The Config file changes are going to conflict for each of them so I'm fine if you want to roll them up into one or just merge+rebase each on your own.

[paulbalandan]

I'll just rebase each approved.

[paulbalandan]

Failing CS fixed in #6491