support KUDOS: in-source

It's nice that we have a `kudos.yaml` file support, but it would also be great to be able to support in-line `KUDOS:` from source code.

For instance I just forked / copy-pasted something and would love to add a 

```
// KUDOS: [identifier]
```

inline, similar to how we do:

```

TODO: this thing should be zero
FIXME: this thing is broken
REFACTOR: this is slow

```

etc...