Add Nethermind (#329)

* feat: add nethermind to base

* feat: add supported clients to readme

* fix: add missing flags on nethermind config

* Update version

* Update commit

* Update commit

* Update nethermind/Dockerfile

Co-authored-by: Michael de Hoog <michael.dehoog@gmail.com>

* feat: add qemu to nethermind docker build

* fix: update release/1.29.0 commit

* fix: build on nethermind

* fix: build on nethermind, buildx command

* fix: build on nethermind, labels breaking buildx

* fix: build on nethermind, labels breaking buildx again

* fix: build on nethermind, buildx

* fix: build on nethermind, buildx labels

* fix: build on nethermind, buildx labels, now as cmd

* fix: build on nethermind, buildx labels

* fix: update with sed targetarch

* fix: upgrade build action on nethermind to use buildx

* fix: update dockerfile

* fix: update commit release 1.29.0

* fix: update commit release 1.29.0 and solve docker build issues

* fix: update pr action

* feat: add workflow dispatch

* feat: update nethermind to latest version

* Update docker.yml

* Update Nethermind version

* More explicit version for base .NET container

* Less explicit version for runtime

* Remove Qemu pr.yml

* Update docker.yml

* Update pr.yml

---------

Co-authored-by: Ben Adams <thundercat@illyriad.co.uk>
Co-authored-by: Michael de Hoog <michael.dehoog@gmail.com>