- add `x` and `y` attributes to the Spectrum
- remove forceDim1 and forceDim2 for force_dims which take the two dimensions as input and recompute the Spectrums indices.
warning: this could effect the display of Spectra in the future. So this should be defined before tretatment and keep for the life of the object.
note: the roi process is creating a new Spectra so will not be an issue

[orangecontrib][XASInput] move the start button to a default QDialog Ok button and hide the Widget when ok is activated

[gui][e0calculator] invert `use mean` and `use median` to increase readibility (keep order of the line edit) - prefered choise might be median

[ci] link to an image contaiing gtk3 for larch build

See merge request workflow/est!23

[refactoring] rename project est instead of xas

See merge request workflow/est!20