Implement a tool to automatically fix PHP Coding Standards issues

[vitormattos]

Context:

In PHP it is not mandatory to use coding standards (spaces, brace placement, etc). To define coding standards in the language, the PSRs were created.

Tasks:

• Implement of friendsofphp/php-cs-fixer package and apply standard definition.
• Implement script in composer.json to run the check and fix. Example:

   "scripts": {
       "post-install-cmd": [
           "composer install -d tests/tools/php-cs-fixer/"
       ],
       "post-update-cmd": [
           "composer install -d tests/tools/php-cs-fixer/"
       ],
       "cs:check": "tests/tools/php-cs-fixer/vendor/bin/php-cs-fixer fix --dry-run --diff",
       "cs:fix": "tests/tools/php-cs-fixer/vendor/bin/php-cs-fixer fix"