chore: prettify freesurfer selector

feat: slight enh of perspective zoom behaviour

it also sets global nav state

invisible UI in mobile view

refactor: individual annot export
refactor: annotation geometry & edit cls
bugfix: annots in other spaces
feat: store annts in local storage

- added point
- allow copy of string/json/sands

bugfix: regional receptor distribution

Co-authored-by: Xiao Gui <xgui3783@gmail.com>
Co-authored-by: Daviti Gogshelidze <daviti1@mail.com>

chore: side nav panel state

...on smaller screens