Index Writer for HNSW_IVF

[hicder]

I change the command line arguments for index_writer to read a yaml config, since we're hitting a large number of config options now

➜  hieu-reindex-1 tree .
.
├── centroid_quantizer
│   └── no_op_quantizer_config.yaml
├── centroids
│   ├── index
│   └── vector_storage
└── ivf
    ├── index
    └── vectors