this initialises a headless vulkan compute shader pipeline, i.e. it does not require an x server to be run.
usage: vkdt-cli -g <graph.cfg>
[-d verbosity] set log verbosity (mem,perf,pipe,cli,err,all)
[--dump-modules|--dump-nodes] write graphvis dot files to stdout
[--quality <0-100>] jpg output quality
[--width <x>] max output width
[--height <y>] max output height
[--filename <f>] output filename (without extension or frame number)
[--format <fm>] output format (o-jpg, o-bc1, o-pfm, ..)
[--output <inst>] name the instance of the output to write (can use multiple)
this resets output specific options: quality, width, height
[--config] everything after this will be interpreted as additional cfg lines