[refactoring] rename project est instead of xas

See merge request workflow/est!20

Update 0 2

See merge request workflow/xas!18

[orangecontrib][larch] normaize call to larch: from the main thread with some callback to QApplication.processEvents

[orangecontrib] add _ParameterWindowContainer to add a auto/manual option for computation in OW from larch and pymca

[gui][XASObjectViewer] move all plot function in the XasObjectViewer.py and for some function add a "mean", "std" display if possible

[orangecontrib] fix, add missing widget icons in setup.py since orangecontrib.xas.widgets.larch and orangecontrib.xas.widgets.pymca have been created