minor: Make @PSR12 remove anonymous classes empty braces

doc/ruleSets/PSR12.rst

@@ -21,6 +21,8 @@ Rules
 - `lowercase_cast <./../rules/cast_notation/lowercase_cast.rst>`_
 - `lowercase_static_reference <./../rules/casing/lowercase_static_reference.rst>`_
 - `new_with_braces <./../rules/operator/new_with_braces.rst>`_
+  config:
+  ``['anonymous_class' => false]``
 - `no_blank_lines_after_class_opening <./../rules/class_notation/no_blank_lines_after_class_opening.rst>`_
 - `no_leading_import_slash <./../rules/import/no_leading_import_slash.rst>`_
 - `no_whitespace_in_blank_line <./../rules/whitespace/no_whitespace_in_blank_line.rst>`_

doc/rules/operator/new_with_braces.rst

@@ -78,10 +78,16 @@ Rule sets
 The rule is part of the following rule sets:
 
 @PSR12
-  Using the `@PSR12 <./../../ruleSets/PSR12.rst>`_ rule set will enable the ``new_with_braces`` rule with the default config.
+  Using the `@PSR12 <./../../ruleSets/PSR12.rst>`_ rule set will enable the ``new_with_braces`` rule with the config below:
+
+  ``['anonymous_class' => false]``
 
 @PhpCsFixer
-  Using the `@PhpCsFixer <./../../ruleSets/PhpCsFixer.rst>`_ rule set will enable the ``new_with_braces`` rule with the default config.
+  Using the `@PhpCsFixer <./../../ruleSets/PhpCsFixer.rst>`_ rule set will enable the ``new_with_braces`` rule with the config below:
+
+  ``['anonymous_class' => false]``
 
 @Symfony
-  Using the `@Symfony <./../../ruleSets/Symfony.rst>`_ rule set will enable the ``new_with_braces`` rule with the default config.
+  Using the `@Symfony <./../../ruleSets/Symfony.rst>`_ rule set will enable the ``new_with_braces`` rule with the config below:
+
+  ``['anonymous_class' => false]``

src/RuleSet/Sets/PSR12Set.php

@@ -38,7 +38,9 @@ public function getRules(): array
             'declare_equal_normalize' => true,
             'lowercase_cast' => true,
             'lowercase_static_reference' => true,
-            'new_with_braces' => true,
+            'new_with_braces' => [
+                'anonymous_class' => false,
+            ],
             'no_blank_lines_after_class_opening' => true,
             'no_leading_import_slash' => true,
             'no_whitespace_in_blank_line' => true,

tests/Fixtures/Integration/set/@PSR12.test-in.php

@@ -1,4 +1,7 @@
 <?
+
+declare(strict_types = 1 );
+
 namespace Vendor\Package;
 use const BAR;
 use function foo;
@@ -39,4 +42,20 @@ class Aaa implements
 $b = (boolean) 1;
 $c = true  ? (INT) '1'  :  2;
 
+function bar() : void
+{
+}
+
+$class = new class () {};
+
+class Baz
+{
+    const FOO = 'foo';
+
+    public function bar(): ? int
+    {
+        return 0;
+    }
+}
+
 ?>

tests/Fixtures/Integration/set/@PSR12.test-out.php

@@ -1,5 +1,7 @@
 <?php
 
+declare(strict_types=1);
+
 namespace Vendor\Package;
 
 use FooInterfaceA;
@@ -48,3 +50,19 @@ class Aaa implements
 $a = new Foo();
 $b = (bool) 1;
 $c = true ? (int) '1' : 2;
+
+function bar(): void
+{
+}
+
+$class = new class {};
+
+class Baz
+{
+    public const FOO = 'foo';
+
+    public function bar(): ?int
+    {
+        return 0;
+    }
+}