How to make an interactive session?

Can I use the requestHandler to make a basic shell/interactive session?
I have something like this:
```hs
channelRequest :: MonadIO m => Bool -> ChannelRequest -> ChannelT i m ()
channelRequest wr Shell = do
user <- authUser <$> getChannelStateS csAuth
logStr ("shell requested by: " <> user)
{- ?? -}
```

Start by reading the requestHandler usage and the channelRequest Shell branch shown in the issue, then inspect the repository's SSH channel and session entry points. Determine whether interactive sessions are supported and what integration is required; the issue names no specific file, test, or completion criterion.

Written by the indexing model from the issue text.