[bug#57737] emacs-eval-in-repl patches

[Nicolas Graves]

This series of patches introduces all different files included in the
eval-in-repl repo, as well as the org-babel-eval-in-repl package.

Each file is taken individually so people can download a subset of them
depending on their use.

emacs-js-comint and emacs-alchemist are necessary packages for some of
them.

-- 
Best regards,
Nicolas Graves