automatic biosample package validation

[dthoward96]

Biosample packages can be incorporated into seqsender using the biosample attribute xml. It lists off the requirements for every biosample package and can be automated to regularly collect the most up to date xml to also store locally on github. This will allow users who want to use seqsender to instantly use their desired package without having to adjust the main_config file to support their organisms.

• [ ] GitHub action to weekly scrape the biosample attribute xml to keep the repo up to date with latest attribute.
• [x] Seqsender function to pull down latest biosample attribute from web.
• [x] Seqsender biosample update to incorporate biosample package xml in addition to required fields in main config.