fix: normalize benchmark definitions (#4792)

* fix: remove *extended and MAEB+

These are mostly for reproducibility so we have moved them to their respectives script repos.

embeddings-benchmark/maeb-paper#3
embeddings-benchmark/mveb-paper#1

* remove script to maeb

* fix imports

* fix: normalize benchamrk definitions

Normalize to:
- defintion of what is measures
- rationale/notable characteristics
- version updates

Author: KennethEnevoldsen