Provide a way to run benchmarks with alternate framework configs

[diptorupd]

The helper function runner.run_benchmarks does not offer a way to run the benchmarks with an external set of framework configurations.

I want to run dpbench in batch mode with a set of framework configs that change the sycl_device attribute. However, as the runner.run_benchmarks only reads configs from the default location, I cannot submit multiple jobs where each job has a different sycl_device.

[ZzEeKkAa]

I agree that we need to provide external framework support, but for this particular problem we can just use run flag:

> dpbench run --help

Subcommand to run benchmark executions.

options:
  --sycl-device [SYCL_DEVICE]
                        Sycl device to overwrite for framework configurations.