Updating README and config files

[mikibonacci]

Adding phonopy@merlin-cpu and some readme update.

[mikibonacci]

Hi @unkcpz , the PR os ready ( I have not write access, so ask you to check).
However, I still need to update json schema to accept also the containerized keys.

[unkcpz]

Thanks @mikibonacci! Just a minor request. I'll change and merge it so you can test it tomorrow. The repo is still partially experimental state so we can make changes after.

[mikibonacci]

Thanks a lot @unkcpz !

[unkcpz]

The list should be updated so you can test in QeApp.
I was too rush and didn't check the pre-commit was failed. I'll quickly fix it.

[mikibonacci]

Yeah actually I already tested and containerized codes are not currently supported. However, I solved this in a PR to the aiidalab-widget-base, as the code setup is done there. With the PR everything works and we can define containerized codes in the registry