Add problem matcher for yamllint

This problem matcher JSON file was originally copied from the [Home
Assistant](https://github.com/home-assistant/core) project on GitHub.
The Home Assistant project is licensed under the Apache 2.0
open-source license. The version of the files at the time they were
copied was 2025.1.2.

Author: mhucka

.github/problem-matchers/yamllint.json

@@ -0,0 +1,22 @@
+{
+  "problemMatcher": [
+    {
+      "owner": "yamllint",
+      "pattern": [
+        {
+          "regexp": "^(.*\\.ya?ml)$",
+          "file": 1
+        },
+        {
+          "regexp": "^\\s{2}(\\d+):(\\d+)\\s+(error|warning)\\s+(.*?)\\s+\\((.*)\\)$",
+          "line": 1,
+          "column": 2,
+          "severity": 3,
+          "message": 4,
+          "code": 5,
+          "loop": true
+        }
+      ]
+    }
+  ]
+}