* starting removing stuff
* fix jest config
* disable CLI mode until other PR is merged
* fix the schema
* add deprecation for maxPayloadBytes
* fix legacy start logic
* deletes `env` from unknown args
* fix FTR test config
* some legacy service deletion
* move config validation
* remove legacy exports from entrypoint
* preserve legacy logging in core logging config
* try to fix uiSettings integration tests
* fix legacy service tests
* more type fix
* use fromRoot from @kbn/utils
* cleanup kibana.d.ts
* fix unit tests
* remove src/core/server/utils
* fix server script
* add integration test for `/{path*}` route
* add unit tests on legacy config
* adapt uiSetting IT bis
* fix tests
* update generated doc
* address some review comments
* move review comments
* fix some stuff
* fix some stuff
* fix some stuff
* fix some stuff bis
* generated doc
* add test for ensureValidConfiguration
