minor refactor

TODO:

- annotation
- real space not yet available
- nehuba status panel busted
- check swc works

generally working with the following caveats:

- fsaverage busted
- annotation not yet working
- colin27 busted
- real space interpolation values not yet available
- (as a result of above) nehuba status panel not yet working

ALSO TO CHECK:
- swc

bugfix: annotation mode works again

feat: voi
chore: extracted ng layer ctl to its own module
fix: navigation state/route race condition
fix: use useViewer state on generalApplyState
fix: layer ctrl generalise layer id (prev only applied to pmap)
refactor: nehuba module
feat: enable voi query

refactor: access export_nehuba
fix: loading pmap

bugfix: on new ATP, reset panel mode
bugfix: scale bar position
fix tests

Co-authored-by: fsdavid <daviti1@mail.com>

chore: removed deprecated, unused vars/files

bugfix: allow layer transparency to be modified via ng custom layer

fix annotation layer

bugfix: priority http interceptor
chore: simplify layout module
bugfix: fixed nehuba ready flag

feat: reenabled url encoding of viewer state
feat: make http priority interceptor work
chore: unified how ng layers are retrieved
bugfix: on maximise/cycle nehuba view, redraw

refactor: use baselayer/nglayer to create nehuba config layers
refactor: simplify nglayer obs
feat: restore aux mesh control
chore: remove unused vars in nehubaViewer
refactor: improve viewer_ctx event performance (rather than
emitting all latest events, only emit the relevant event)
bugfix: nehuba.fromRootStore get volume filter when space etc are undefined

refactor: refactor parcellation version traverse
feat: region.directive navigate to
refactor: remove unused interface & functions
refactor: complete remove old store
refactor: nehubaViewer ready state refactored
feat: added region chip

wip: migrate/remove src/service/

chore: removed unnessary refresh UI

chore: added saneurls
chore: improv build

WIP fixing tests

chore: typing for switchmap waitfor

feat: allow toggling of octant removal when landmarks shown

chore: update release notes

chore: refactor nehuba navigation service