Draft: Restart Coulomb integrals
Description
The Coulomb integrals for DFT+U are now written in the restart folder and can be loaded for GS and UNOCC calculations. This avoids recomputing the Coulomb integrals at restart time.
News snippet
Avoids recomputing the Coulomb integrals of DFT+U(+V) at restart time.
Checklist
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I have checked that my code follows the Octopus coding standards -
I have added tests for all the new features added in this request.