Add GCC-based problem matcher to VS Code config

.vscode/tasks.json

@@ -6,9 +6,39 @@
 			"label": "Build",
 			"type": "shell",
 			"command": "zig build",
+
 			"group": {
 				"kind": "build",
 				"isDefault": true
+			},
+
+			"presentation": {
+				"echo": true,
+				"reveal": "always",
+				"focus": true,
+				"panel": "shared",
+				"showReuseMessage": true,
+				"clear": true,
+				"revealProblems": "onProblem",
+			},
+
+			"problemMatcher": {
+				"source": "gcc",
+				"owner": "cpptools",
+
+				"fileLocation": [
+					"autoDetect",
+					"${cwd}",
+				],
+
+				"pattern": {
+					"regexp": "^(.*?):(\\d+):(\\d*):?\\s+(?:fatal\\s+)?(warning|error):\\s+(.*)$",
+					"file": 1,
+					"line": 2,
+					"column": 3,
+					"severity": 4,
+					"message": 5,
+				}
 			}
 		},
 		{
@@ -18,7 +48,7 @@
 			"group": {
 				"kind": "test",
 				"isDefault": true
-            }
+			},
-        }
+		},
-    ]
+	],
 }