Fix the issues reported by phpcs

Problem/Motivation

Getting following error/warnings.

FILE: /var/www/html/modules/contrib/intl_date/intl_date.services.yml
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FOUND 1 ERROR AFFECTING 1 LINE
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5 | ERROR | [x] Expected 1 newline at end of file; 2 found
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PHPCBF CAN FIX THE 1 MARKED SNIFF VIOLATIONS AUTOMATICALLY
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FILE: /var/www/html/modules/contrib/intl_date/intl_date.api.php
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FOUND 2 ERRORS AFFECTING 2 LINES
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1 | ERROR | [x] The PHP open tag must be followed by exactly one blank line
29 | ERROR | [x] Doc comment long description must end with a full stop
------------------------------------------------------------------------------
PHPCBF CAN FIX THE 2 MARKED SNIFF VIOLATIONS AUTOMATICALLY
------------------------------------------------------------------------------

FILE: /var/www/html/modules/contrib/intl_date/intl_date.module
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FOUND 0 ERRORS AND 1 WARNING AFFECTING 1 LINE
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12 | WARNING | [x] The variable name should be defined after the type
-----------------------------------------------------------------------
PHPCBF CAN FIX THE 1 MARKED SNIFF VIOLATIONS AUTOMATICALLY
-----------------------------------------------------------------------

FILE: /var/www/html/modules/contrib/intl_date/README.md
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FOUND 0 ERRORS AND 1 WARNING AFFECTING 1 LINE
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14 | WARNING | Line exceeds 80 characters; contains 102 characters
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FILE: /var/www/html/modules/contrib/intl_date/src/Form/DateFormatDeleteForm.php
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FOUND 0 ERRORS AND 1 WARNING AFFECTING 1 LINE
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46 | WARNING | t() calls should be avoided in classes, use \Drupal\Core\StringTranslation\StringTranslationTrait and $this->t() instead
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FILE: /var/www/html/modules/contrib/intl_date/src/Form/DateFormatAddForm.php
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FOUND 0 ERRORS AND 1 WARNING AFFECTING 1 LINE
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19 | WARNING | t() calls should be avoided in classes, use \Drupal\Core\StringTranslation\StringTranslationTrait and $this->t() instead
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FILE: /var/www/html/modules/contrib/intl_date/src/Form/DateFormatEditForm.php
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FOUND 0 ERRORS AND 1 WARNING AFFECTING 1 LINE
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19 | WARNING | t() calls should be avoided in classes, use \Drupal\Core\StringTranslation\StringTranslationTrait and $this->t() instead
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FILE: /var/www/html/modules/contrib/intl_date/src/TwigExtension.php
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FOUND 1 ERROR AFFECTING 1 LINE
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23 | ERROR | The array declaration extends to column 91 (the limit is 80). The array content should be split up over multiple lines
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FILE: /var/www/html/modules/contrib/intl_date/src/Plugin/Field/FieldFormatter/IntlDateTimeDefaultFormatter.php
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FOUND 0 ERRORS AND 3 WARNINGS AFFECTING 3 LINES
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66 | WARNING | t() calls should be avoided in classes, use \Drupal\Core\StringTranslation\StringTranslationTrait and $this->t() instead
67 | WARNING | t() calls should be avoided in classes, use \Drupal\Core\StringTranslation\StringTranslationTrait and $this->t() instead
82 | WARNING | t() calls should be avoided in classes, use \Drupal\Core\StringTranslation\StringTranslationTrait and $this->t() instead
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FILE: /var/www/html/modules/contrib/intl_date/src/IntlDateFormatListBuilder.php
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FOUND 0 ERRORS AND 2 WARNINGS AFFECTING 2 LINES
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20 | WARNING | t() calls should be avoided in classes, use \Drupal\Core\StringTranslation\StringTranslationTrait and $this->t() instead
21 | WARNING | t() calls should be avoided in classes, use \Drupal\Core\StringTranslation\StringTranslationTrait and $this->t() instead
-----------------------------------------------------------------------------------------------------------------------------------------

Time: 4.9 secs; Memory: 6MB

Steps to reproduce

Run following command

phpcs --standard=Drupal,DrupalPractice --extensions=php,module,inc,install,test,profile,theme,css,info,txt,md,yml modules/contrib/intl_date/

Proposed resolution

Above error/warnings need to be fixed.