add YAML parser

test/coders/yaml.cpp

@@ -0,0 +1,22 @@
+#include <gtest/gtest.h>
+
+#include "coders/yaml.hpp"
+#include "coders/json.hpp"
+#include "coders/commons.hpp"
+
+#include "io/io.hpp"
+#include "io/devices/StdfsDevice.hpp"
+
+namespace fs = std::filesystem;
+
+TEST(YAML, EncodeDecode) {
+    io::set_device("root", std::make_shared<io::StdfsDevice>(fs::u8path("../../")));
+    auto filename = "root:.github/workflows/windows-clang.yml";
+    try {
+        auto value = yaml::parse(io::read_string(filename));
+        std::cout << json::stringify(value, true) << std::endl;
+    } catch (const parsing_error& error) {
+        std::cerr << error.errorLog() << std::endl;
+        throw error;
+    }
+}