Add environment variables to nemo actions

[ManIVIctorious]

It would be cool if you could add some environment variables to the nemo actions api.
I think about something like

$1 File name
$2 Path to file
And maybe some more

This would enhance the possibilities of nemo actions tremendously.
For instance it would add the possibility to define a dynamic place for output.

[ManIVIctorious]

I am absolutely happy with nemo actions, as they are now.