Swig problem matcher

Author: Robadob

.github/problem-matchers.json

@@ -51,6 +51,18 @@
                     "message": 4
                 }
             ]
+        }},
+        {
+            "owner": "swig",
+            "pattern": [
+                {
+                    "regexp": "^(.*):(\d+):\\s+(Warning|Error):\\s+(.*)$",
+                    "file": 1,
+                    "line": 2,
+                    "severity": 3,
+                    "message": 4
+                }
+            ]
         }
     ]
 }