Search ARGO-specific content

[garrettdashnelson]

Branched off from #136

[garrettdashnelson]

@alexandergknoll possibly use astro-pagefind for this?

[alexandergknoll]

Looks very interesting! Willing to give it a shot for sure

[garrettdashnelson]

Content types that should be searchable:

• Stories
• People

[emilyrbowe]

Can create a new root page at search-content to mock up the ARGO-content search as a standalone page

[alexandergknoll]

Estimate: 5-8 hrs