parallelize + show progress for input plugins

[robfitzgerald]

this PR parallelizes the input plugin operations using the same chunking approach as the search/output plugin parallelization. it also adds a progress bar (using mutex for shared access) to the processing:

input plugins:   7%|█████████▆                                                       |  155/2204 [00:17<03:56, 8.67it/s]

edit: realized i could also add a progress bar for the searches too.

input plugins: 100%|█████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████| 2204/2204 [04:24<00:00, 8.33it/s]
[2023-11-30T21:35:39Z INFO  routee_compass::app::compass::compass_app] creating 12 parallel batches across 16 threads to run queries with chunk size 520
search:   2%|██▇                                                                                                                                             |  118/6240 [00:27<23:40, 4.31it/s]

Closes #56.

[nreinicke]

Cool, love that we can have progress bars for both of those steps now. Thanks for adding in!