Introduce the 'multiple' error formatter

Allows using multiple error formatters with just configuration

Author: BackEndTea

conf/config.neon

@@ -2174,3 +2174,9 @@ services:
 		class: PHPStan\Command\ErrorFormatter\TeamcityErrorFormatter
 		arguments:
 			relativePathHelper: @simpleRelativePathHelper
+
+	errorFormatter.multiple:
+		class: PHPStan\Command\ErrorFormatter\ChainErrorFormatter
+		arguments:
+			formatters:
+				- @errorFormatter.table

src/Command/ErrorFormatter/ChainErrorFormatter.php

@@ -0,0 +1,30 @@
+<?php
+
+namespace PHPStan\Command\ErrorFormatter;
+
+use PHPStan\Command\AnalysisResult;
+use PHPStan\Command\Output;
+
+/**
+ * @api
+ * @final
+ */
+class ChainErrorFormatter implements ErrorFormatter
+{
+	/**
+	 * @param list<ErrorFormatter> $formatters
+	 */
+	public function __construct(
+		private array $formatters,
+	) {
+	}
+
+	public function formatErrors(AnalysisResult $analysisResult, Output $output): int
+	{
+		foreach ($this->formatters as $errorFormatter) {
+			$errorFormatter->formatErrors($analysisResult, $output);
+		}
+
+		return $analysisResult->hasErrors() ? 1 : 0;
+	}
+}