doc/doap: Claim support for XEP-0268 via mod_csi_simple
mod_csi_simple tries to follow the advice in XEP-0268.
Notably, since 7d78b24d8449 it also does this:
> If the server receives data, the phones radio is already on, therefore
> you should flush any pending data as soon as possible after receiving
> data from a client
exclude = {
"^%./spec/";
}