Implement tmpfs plugin

[ilaypilo]

Reference from the old volatility project
https://github.com/volatilityfoundation/volatility/blob/master/volatility/plugins/linux/tmpfs.py

[NoahTroy]

I would be more than happy to tackle this. I'm currently looking for a project, and think this could make a good first contribution.

If any volatility devs are reading this, would this be a useful plugin to port to volatility3? Are there any warnings or recommendations you might have before I dive too deep into the documentation and start working on this? Thanks!

[ikelos]

We're keen to get as much volatility 2 functionality ported across to volatility 3 as possible, so from that perspective it would be useful. I'm not sure how popular or well-used a plugin it was in volatility 2.

Volatility 3 now has an interface to allow plugins to output files, you don't need to worry about the output directory or anything like that, you just construct a file-like object and tell it as preferred filename that would be useful to use. The rest of it looks pretty straightforward, hopefully we have most of the linux specific utilities in the LinuxUtilities class and you should depend on that with a requirement if you're going to use it (that just helps make sure everything hangs together properly as things get update).

Otherwise I think that's about it, submit a PR and feel free to ask us questions (ideally on slack) and we'll be happy to help get it into shape so it can be merged! 5:)

[NoahTroy]

@ikelos Great, thank you so much for the kind and helpful response! I'll start working on this today, and will be sure to reach out on Slack with any questions! :)