The plugins are now delete from MPS, if still installed. Because they are now in a subdirectory of mbeddr and build by the mbeddr build script, there is no more need to install them. The languages are included as a project library.
Revert "Removed folder from git, execute 'git submodule update --init --recursive' in the repo root to get plug-ins"

This reverts commit 6b1eabef265db6267bafdec7bd1d3ad2e470da47.