Feature/degauss widget pdos tab

[AndresOrtegaGuerrero]

This tab includes a degauss widget to the pdos plugin
This useful for some case where the PDOS calculation doesnt obtain some projections (is a projwfc,x bug , that Giovanni mentioned) , this is a way around to avoid this.

This solves the issue of core electron density not displayed before for Au

Now

Before

This PR is quite important since it also affects states around fermi level like in this case , if you noticed there are some missing states in the pdos

[codecov]

Codecov Report

Attention: Patch coverage is 63.63636% with 8 lines in your changes missing coverage. Please review.

Project coverage is 67.92%. Comparing base (986c0d9) to head (9c878d5).
Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
src/aiidalab_qe/plugins/pdos/setting.py	64.70%	6 Missing ⚠️
src/aiidalab_qe/plugins/pdos/workchain.py	60.00%	2 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #833      +/-   ##
==========================================
- Coverage   67.94%   67.92%   -0.03%     
==========================================
  Files          49       49              
  Lines        4361     4383      +22     
==========================================
+ Hits         2963     2977      +14     
- Misses       1398     1406       +8     

Flag	Coverage Δ
python-3.11	67.92% <63.63%> (-0.03%)	⬇️
python-3.9	67.95% <63.63%> (-0.03%)	⬇️

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[cpignedoli]

The PDOS smearing affects both DOS and PDOS so teh name of teh widget shoudl be different.
-it must be NOT active by default
-It should have a default value that provides similar results compared to default tetraedron parameters (so something close to 0.005 for protocol moderate --I tested Au for this--))

[cpignedoli]

approved if you merge my new default value

[mikibonacci]

Hi @AndresOrtegaGuerrero, thank you for the PR.
For me it can be merged, I just left a small comment (nothing relevant actually).

[mikibonacci]

why not

self.pdos_degauss_eV = ipw.HTML(
              value = f"({self.pdos_degauss.value * RYDBERG_TO_EV:.4f} eV)",
)