start work on upgrade to latest Nvidia tensorrt version

[firefly2442]

This isn't finished but it's a start at upgrading to a new tensorrt version. It uses a newer Ubuntu LTS version and much of it is a direct copy-paste from the code in the Github repo from Nvidia. watsor/engine.py needs some work as there are likely additional code changes to make in order to build with this new version. I hope it's helpful to someone as a starting point. I don't have experience with tensorrt so I thought others might be able to run with it.

[asmirnou]

Thank you for doing that.

Do you want to hand PR over to me or you can finish the upgrade? I do not have much time at the moment, honestly.

[firefly2442]

I'm happy to test or help out in any way I can but I feel I'm stuck at this point. I just don't have the experience to know where to proceed so it might be best if you take over. Thanks for the wonderful project and work you've done. If I can be of any assistance or even if you're able to get this PR a little further, I could take another shot at it. Cheers.

[asmirnou]

I'm closing this one in favour of #31. Thank you for your help.