Adding Component Documentation Guide

Description of Change

Adding guidance for how to document components for the Flagship team.

Reviewer: Confirm the items below as you review

[ ] PR is connected to issue(s)
[ ] Tests are included to cover this change (when possible)
[ ] No magic strings (All string unions follow the Union -> Constant type pattern)
[ ] No secrets or API keys are checked in
[ ] All imports are absolute (no relative imports)
[ ] New functions and Redux work have proper TSDoc annotations