Use PseudoPotentialData.jl instead of Artifacts

[mfherbst]

• Fix tests
• Fix docs
• Remove Artifacts.toml

[mfherbst]

@antoine-levitt Any opinions on this ?

Essentially for pseudopotentials you can use PseudoPotentialData or a simple instead of specifying the full file name for each element. The main changes are visible in

• docs/src/guide/tutorial.jl
• docs/src/ecosystem/atomsbase.jl

[antoine-levitt]

Sure, that looks nice! There is this though "Warning: The current identifiers for the pseudopotential families is planned to be overhauled. This will be a breaking change, where the minor version of the package will be bumped." If the change is coming soon can't we wait until that's done to make the change in DFTK?

[mfherbst]

Well that requires still some discussions with people from the Aiida world and some annoying manual changes I have no idea when I or someone will actually do it.

Lets merge now and have one breaking DFTK release instead of two in relatively short succession.

[mfherbst]

Lets merge now and have one breaking DFTK release instead of two in relatively short succession.

I have an idea for a quick fix, which will avoid the changes in the naming. I'll do that before the merge.