Separate resources for the QE app

[AndresOrtegaGuerrero]

When submitting the HarmonicWorkChain , the workchain fails because the resources of one of the two child workchain arent enough or too much (problem in gpu implementation of qe).
A solution could be to separate the definition of the resources.

We provide other two pw codes, a phonon-pw and a dielectric-pw, in this way is not invasive to the rest of the codes.

In the future, at the qe-app level, we should be able to distribute different resources only with one pw code (like a table with one code selected and all the workchains which are going to use it.

• TODO open an issue in the qe-app.