* Migrate most plugins to synchronous lifecycle (#89562)
* first pass
* migrate more plugins
* migrate yet more plugins
* more oss plugins
* fix test file
* change Plugin signature on the client-side too
* fix test types
* migrate OSS client-side plugins
* migrate OSS client-side test plugins
* migrate xpack client-side plugins
* revert fix attempt on fleet plugin
* fix presentation start signature
* fix yet another signature
* add warnings for server-side async plugins in dev mode
* remove unused import
* fix isPromise
* Add client-side deprecations
* update migration examples
* update generated doc
* fix xpack unit tests
* nit
* (will be reverted) explicitly await for license to be ready in the auth hook
* Revert "(will be reverted) explicitly await for license to be ready in the auth hook"
This reverts commit fdf73feb
* restore await on on promise contracts
* Revert "(will be reverted) explicitly await for license to be ready in the auth hook"
This reverts commit fdf73feb
* Revert "restore await on on promise contracts"
This reverts commit c5f2fe51
* add delay before starting tests in FTR
* update deprecation ts doc
* add explicit contract for monitoring setup
* migrate monitoring plugin to sync
* change plugin timeout to 10sec
* use delay instead of silence
# Conflicts:
# x-pack/plugins/xpack_legacy/server/plugin.ts
* fix mock
97f89e256b