Update the documentation and the docker image to include intel-media-va-driver-non-free

[tirrorex]

Please put plugin requests/bugs at: https://github.com/HaveAGitGat/Tdarr_Plugins

Is your feature request related to a problem? Please describe.
I was trying to make a tdarr-node on a proxmox lxc, the cpu being a i7 13700, i couldnt use it without scripting.
For context my temp transcoding folder and original/final folder of the file is on another nfs share (my nas map root user and group to 1000 so there is no issues with my other docker instances writing on the shares)

Describe the solution you'd like
I would like the latest image to support recent intel cpus for qsv

Describe alternatives you've considered
My solution was to make a script that runs when the container is created, couldnt find another way around this issue.

`# 1. Install Drivers
apt-get update
apt-get install -y intel-media-va-driver-non-free vainfo

2. FIX PERMISSIONS

This grants Read/Write access to EVERYONE inside the container.

This bypasses the "User Drop" issue completely.

chmod 666 /dev/dri/renderD128
chmod 666 /dev/dri/card*`

It feels a big dirty though, i could make my own image but i imagine other people might run into the same issue? (since it is the trend to use mini pc for homelab)

[HaveAGitGat]

FYI the image alread has intel-media-va-driver-non-free vainfo in.

You could try this to see if it works for you:
#1289 (comment)