add .editorconfig
add .editorconfig

We already have it in a few modules and I think it would be good to
distribute it via modulesync.

voxpupuli/modulesync_config,dhoppe/modulesync_config,dhoppe/modulesync_config,puppet-community/modulesync_config,voxpupuli/modulesync_config,dhoppe/modulesync_config,dhoppe/modulesync_config,voxpupuli/modulesync_config,voxpupuli/modulesync_config