This commits adds another variant to the position hook. This one allows
a popper to be positionned next to a side, having the same dimension from
this side. A classname is then added to the popper, allowing the element
to be stylized depending of the side it's fitting.
Possible values:
(bottom/top)-fit would give the same width as the reference
(left/right)-fit would give the same height as the reference
Tests have been added to make sure those dimensions are correctly
applied when using thr fit variant.
Part-of: odoo/odoo#106265
luvi
6a7b3dedaf