Add columns for 10X kits to modality table

[allyhawkins]

Related to https://github.com/AlexsLemonade/ScPCA-manuscript/issues/108

This PR adds three new columns to the existing supplemental table summarizing the total number of samples and libraries across modalities. I added in a column for each of the 10X kits used, 10Xv2, 10Xv3, and 10Xv3.1. In the table, I put these immediately after the single-cell and single-nuclei columns and before any additional modality columns.

I also deleted some extra code that wasn't being used anywhere in the script.

[allyhawkins]

Ah it's because when we originally generated this we didn't have the new Dyer/Chen samples in the metadata. I need to update the script to remove any samples that are not on the portal before creating the table.

[allyhawkins]

Okay I made a few updates to this to account for the errors in the table:

• The individual project metadata files are the only place we have the on_portal column. So I added syncing those files in the sync-metadata.R script.
• To create the table, I first create a sample whitelist by reading in each of the project metadata files and filtering to samples with on_portal=TRUE.
• I also found an error where we were over counting the 10X kits for multiplexed libraries so I rearranged where that counting takes place to make sure we only count 1 per unique library id.

This should now be ready for another look @jaclyn-taroni.