chore: abstractify annotation service
bugfix: sapi region -> getFeatures now includes spatial feat
bugfix:  ieeg now sort by dataset
chore: udpate sapi schema
chore: move splashscreen to sapiviews/core/atlas
feat: added ieeg rich dataset support
chore: abstractify tree control
bugfix: race condition in encoding state in url
chore: added hooks when atlas/tmpl/parc changes
chore: remove unused var/methods
chore: updated get sapi schema script

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: lint

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