Add support for @phpstan-throws

Author: VincentLanglet

src/Parser/PhpDocParser.php

@@ -132,6 +132,7 @@ public function parseTagValue(TokenIterator $tokens, string $tag): Ast\PhpDoc\Ph
 					break;
 
 				case '@throws':
+				case '@phpstan-throws':
 					$tagValue = $this->parseThrowsTagValue($tokens);
 					break;