add job form to hiring

I guess to create a tally form to we can harvest applicant and add it to hiring.md here at docs

> Also we should probably create forms to track who applies to each role because maybe DMing you in unsustainable? @yangwao

Start by reviewing docs/hiring.md and the request to use a Tally form for applicants. Determine what applicant and role-tracking fields the form should contain, then add the form to the hiring documentation; done means applicants have a clear submission path and the documentation links to it.

Written by the indexing model from the issue text.