Factor match expression into the CyclomaticComplexity calculation

This is for Issue #3472, which identified that match() was not being included in the count, when it should have been (similar to a switch statement).
There is no need to add one for the T_MATCH_DEFAULT token, because this is always followed by a T_MATCH_ARROW token, and to do so would be to double-count that entry.

Unit tests provided.

Author: MarkBaker

src/Standards/Generic/Sniffs/Metrics/CyclomaticComplexitySniff.php

@@ -84,6 +84,7 @@ public function process(File $phpcsFile, $stackPtr)
             T_INLINE_THEN    => true,
             T_COALESCE       => true,
             T_COALESCE_EQUAL => true,
+            T_MATCH_ARROW    => true,
         ];
 
         $complexity = 1;

src/Standards/Generic/Tests/Metrics/CyclomaticComplexityUnitTest.inc

@@ -402,4 +402,35 @@ function complexityElevenWithNullCoalescenceAssignment()
     }
 }
 
+
+function complexityFiveWithMatch()
+{
+    return match(strtolower(substr($monthName, 0, 3))){
+        'apr', 'jun', 'sep',  'nov'  => 30,
+        'jan', 'mar', 'may', 'jul', 'aug',  'oct', 'dec'  => 31,
+        'feb' => is_leap_year($year) ? 29 : 28,
+        default => throw new InvalidArgumentException("Invalid month"),
+    }
+}
+
+
+function complexityFourteenWithMatch()
+{
+    return match(strtolower(substr($monthName, 0, 3))) {
+        'jan' => 31,
+        'feb' => is_leap_year($year) ? 29 : 28,
+        'mar' => 31,
+        'apr' => 30,
+        'may' => 31,
+        'jun' => 30,
+        'jul' => 31,
+        'aug' => 31,
+        'sep' => 30,
+        'oct' => 31,
+        'nov' => 30,
+        'dec' => 31,
+        default => throw new InvalidArgumentException("Invalid month"),
+    };
+}
+
 ?>

src/Standards/Generic/Tests/Metrics/CyclomaticComplexityUnitTest.php

@@ -48,6 +48,7 @@ public function getWarningList()
             285 => 1,
             333 => 1,
             381 => 1,
+            417 => 1,
         ];
 
     }//end getWarningList()