style: enable types_spaces rule

Rule:

https://github.com/PHP-CS-Fixer/PHP-CS-Fixer/blob/930dc93a1b90eb991d13e2766a340aa6922d4a2c/doc/rules/whitespace/types_spaces.rst

Examples:

`catch(A | B)` => `catch(A|B)`

`function foo(): A | B` => `function foo(): A|B`

Signed-off-by: Daniel Kesselberg <mail@danielkesselberg.de>

src/Config.php

@@ -58,6 +58,7 @@ public function getRules() : array {
 			'single_import_per_statement' => true,
 			'single_line_after_imports' => true,
 			'switch_case_space' => true,
+			'types_spaces' => ['space' => 'none', 'space_multiple_catch' => 'none'],
 			'visibility_required' => [
 				'elements' => ['property', 'method', 'const']
 			],