GitLab

* add electra model to flax

* Remove Electra Next Sentence Prediction model added by mistake

* fix parameter sharing and loosen equality threshold

* fix styling issues

* add mistaken removen imports

* fix electra table

* Add FlaxElectra to automodels and fixe docs

* fix issues pointed out the PR

* fix flax electra to comply with latest changes

* remove stale class

* add copied from
Co-authored-by: Patrick von Platen <patrick.v.platen@gmail.com>