Extend functionality for structure selection in SC
Description
It is becoming more and more frequent (for myself) to have structure containers with structures from many different sources and hence I think we should we make selecting structures from a SC easier.
Example
========================= Structure Container =========================
Total number of structures : 376
-----------------------------------------------------------------------
index | user-tag | num-atoms | fit-ready | avg-disp | avg-force
-----------------------------------------------------------------------
96 | md-T100 | 54 | True | 0.0613 | 0.2869
99 | md-T300 | 54 | True | 0.0636 | 0.3224
273 | md-T600 | 54 | True | 0.1159 | 0.4662
280 | md-T600-rattle | 54 | True | 0.1451 | 0.5183
276 | mc-rattle | 54 | True | 0.1382 | 0.6122
Currently when selecting structures
structure_inds = sc.get_structure_indices('md-T100')
structure_inds += sc.get_structure_indices('md-T300')
structure_inds += sc.get_structure_indices('md-T600')
...
Purposed change would be
structure_inds = sc.get_structure_indices(['md-T100', 'md-T300', 'md-T600'])
Edited by Paul Erhart