chore: upgrade to eslint 9 (#2348)

* root + server

* frontend

* frontend-2

* dui3

* dui3

* tailwind theme

* ui-components

* preview service

* viewer

* viewer-sandbox

* fileimport-service

* webhook service

* objectloader

* shared

* ui-components-nuxt

* WIP full config

* WIP full linter

* eslint projectwide util

* minor fix

* removing redundant ci

* clean up test errors

* fixed prettier formatting

* CI improvements

* TSC lint fix

* 'buildBatch' needs to be async since some batch types (like Text) require it. Removed a disabled liniting rule from ObjLoader

* removed unnecessary void

---------

Co-authored-by: AlexandruPopovici <alexandrupopoviciioan@gmail.com>

.prettierignore

@@ -15,6 +15,7 @@ packages/viewer/example/speckleviewer.web.js
 **/nuxt-modules/**/templates/*.js
 packages/frontend-2/lib/common/generated/**/*
 packages/dui3/lib/common/generated/**/*
+packages/server/introspected-schema.graphql
 
 package-lock.json
 yarn.lock