Add remaining EMS file parsing.

src/util/ynBoolConverter.ts

@@ -0,0 +1,12 @@
+const YNBoolConverter = <T extends object>(original: T): T => {
+  Object.keys(original).forEach((key) => {
+    if (original[key] === "Y") {
+      original[key] = true;
+    } else if (original[key] === "N") {
+      original[key] = false;
+    }
+  });
+  return original;
+};
+
+export default YNBoolConverter;