Added all missing use statements from global functions and constants

module/Core/src/Exception/EntityDoesNotExistException.php

@@ -3,6 +3,9 @@ declare(strict_types=1);
 
 namespace Shlinkio\Shlink\Core\Exception;
 
+use function implode;
+use function sprintf;
+
 class EntityDoesNotExistException extends RuntimeException
 {
     public static function createFromEntityAndConditions($entityName, array $conditions)

module/Core/src/Exception/InvalidUrlException.php

@@ -4,6 +4,7 @@ declare(strict_types=1);
 namespace Shlinkio\Shlink\Core\Exception;
 
 use Throwable;
+use function sprintf;
 
 class InvalidUrlException extends RuntimeException
 {

module/Core/src/Exception/NonUniqueSlugException.php

@@ -3,6 +3,8 @@ declare(strict_types=1);
 
 namespace Shlinkio\Shlink\Core\Exception;
 
+use function sprintf;
+
 class NonUniqueSlugException extends InvalidArgumentException
 {
     public static function fromSlug(string $slug): self

module/Core/src/Exception/ValidationException.php

@@ -5,6 +5,7 @@ namespace Shlinkio\Shlink\Core\Exception;
 
 use Throwable;
 use Zend\InputFilter\InputFilterInterface;
+use const PHP_EOL;
 use function is_array;
 use function print_r;
 use function sprintf;