New feature: Run unsaved script files

[demetrio72]

Description of the Issue

I'd like to (optionally) run unsaved script files.

Steps to Reproduce the Issue

1. Create a new "runnable" script, or modify an existing one, do not save it
2. Run it
3. Check behaviour

Expected Behavior

I'd like to run the in memory file

Actual Behavior

Actually, Npp runs older version of file, or nothing if the file is new

Debug Information

If the file is not saved, Npp should save a temporary file and run that one.

[sasumner]

What type of "script" files are you talking about?

[demetrio72]

In my case I'm talking about SQL files, I give the filename to sqlplus. But it could be any (standalone) script, batch files too.
The goal is: I don't want to change the file, I just want to make some little change (for instance, adding some debug info) just for testing, but keeping unchanged original file on disk.