R function(s) to manage maven repositories

[ebocher]

Renjin is able to custom the package loading using the AetherPackageLoader. What about methods to manage maven repositories on the fly from the RenjinScriptEngine.eval() ?

For examples

addRemoteRepository("internal", "default", "https://repo.acme.com/content/groups/public/" )

removeRemoteRepository("internal" )

listRemoteRepositories()