How we used Sourcegraph to migrate to a new component library

[mplacona]

Author: Valery Bugakov Outline: https://docs.google.com/document/d/15tlQp-RpcCOlBKPz_IKA7FEt9lE2W89Os8Timr-l4HI/edit Draft:

• [x] Outline
• [ ] Draft
• [ ] Review