Context

This MR adds the built-in network alias for Kathmandunet.

Notes:

The documentation says "available from version 14.0" but 14.0 is not yet released so it can be surprising. The alias is not in 14.0~rc1. I think that it's ok to have a few days with this "error" because the alternative is that we fix it later and we risk forgetting.
The changelog item will move to docs/CHANGES.rst when 14.0 is released.
You can check the parameters from https://teztnets.xyz/kathmandunet

Manually testing the MR

./tezos-node config init -d ~/tezos-kathmandunet --rpc-addr localhost:8732 --network kathmandunet
./tezos-node run -d ~/tezos-kathmandunet
# If you're patient, wait until level >= 8192 and then:
./tezos-client rpc get /chains/main/blocks/head/header

Checklist

For new features and bug fixes, add an item in the appropriate changelog (docs/protocols/alpha.rst for the protocol and the environment, CHANGES.rst at the root of the repository for everything else).
Select suitable reviewers using the Reviewers field below.
Select as Assignee the next person who should take action on that MR

Edited Jul 29, 2022 by Romain