Add problem matchers (#26)

Closes: #12

.github/matchers/check.json

@@ -0,0 +1,17 @@
+{
+  "problemMatcher": [
+    {
+      "owner": "ruff-check",
+      "pattern": [
+        {
+          "regexp": "^Error: (.*):(\\d+):(\\d+): (\\w+) (.*)$",
+          "file": 1,
+          "line": 2,
+          "column": 3,
+          "code": 4,
+          "message": 5
+        }
+      ]
+    }
+  ]
+}

.github/matchers/format.json

@@ -0,0 +1,14 @@
+{
+  "problemMatcher": [
+    {
+      "owner": "ruff-format",
+      "pattern": [
+        {
+          "regexp": "^(Would reformat):\\s*(.+)$",
+          "message": 1,
+          "file": 2
+        }
+      ]
+    }
+  ]
+}

src/ruff-action.ts

@@ -36,6 +36,7 @@ async function run(): Promise<void> {
 
     addRuffToPath(setupResult.ruffDir);
     setOutputFormat();
+    addMatchers();
     core.setOutput("ruff-version", setupResult.version);
     core.info(`Successfully installed ruff version ${setupResult.version}`);
 
@@ -92,6 +93,17 @@ function setOutputFormat() {
   core.info("Set RUFF_OUTPUT_FORMAT to github");
 }
 
+function addMatchers(): void {
+  const matchersPath = path.join(
+    __dirname,
+    `..${path.sep}..`,
+    ".github",
+    "matchers",
+  );
+  core.info(`##[add-matcher]${path.join(matchersPath, "check.json")}`);
+  core.info(`##[add-matcher]${path.join(matchersPath, "format.json")}`);
+}
+
 async function runRuff(
   ruffExecutablePath: string,
   args: string[],