Document Passwords App

From https://gitlab.developers.cam.ac.uk/uis/devops/admin/-/issues/205 using the template from !53 (merged)

added to epic uis/devops&24 (closed)

added Documentation workflowSprint Ready labels

changed milestone to %DevOps Sprint 119

added workflowIn Progress label and removed workflowSprint Ready label

mentioned in merge request !66 (merged)

added workflowReview Required label and removed workflowIn Progress label

closed with merge request !66 (merged)

mentioned in commit c298a393

mentioned in issue #16 (closed)