src/python/knnPerfTest.py is the main python driver for knn benchmarks. The script allows multiple different benchmark configurations like number of documents and queries to run, quantization level, and type of benchmark (regular / parent join).

These options are hard coded in the script today, and must be changed manually for each run. This adds friction for new developers, and makes it harder to invoke benchmarks with different values as part of another shell script. Can we use python's awesome argparse framework to convert this into an easy to use python CLI command?