Grabbed dndbeyond's source code

```
~/go/bin/sourcemapper -output ddb -jsurl https://media.dndbeyond.com/character-app/static/js/main.90aa78c5.js
```

ddb_main/tools/js/Shared/constants/HttpStatusCodes.ts

@@ -0,0 +1,6 @@
+export const OK = 200;
+export const BAD_REQUEST = 400;
+export const UNAUTHORIZED = 401;
+export const FORBIDDEN = 403;
+export const NOT_FOUND = 404;
+export const PRECONDITION_FAILED = 412;