Add Rule: type_declaration_spaces

[Jubeki]

PHP-CS-Fixer Rule: type_declaration_spaces

With the given configuration this will change it like this (Taken from the PHP-CS-Fixer Page):

--- Original
+++ New
 <?php
 class Bar
 {
-    private string    $a;
-    private bool   $b;
+    private string $a;
+    private bool $b;

-    public function __invoke(array   $c) {}
+    public function __invoke(array $c) {}
 }