Benchmark parameters

Added a parameter --params:=<path>.yaml to allow for providing a path to parameter overrides .yaml file. Updated the short launch and launch.bash.

Added a parameter --benchmark-params to load parameter overrides from scenarios/benchmark_params.yaml for convenience.

Depends on support for params in scenario.launch from anm_sim_platform

• https://github.com/wavelab/anm_sim_platform/pull/16
• https://github.com/wavelab/anm_unreal_sim/pull/107

Integrated changes from

• https://github.com/wavelab/anm_unreal_test_suite/pull/76