docs: add a list of (major?) companies using TypeID in production

[sxlijin]

It would be nice to collect a list of companies using this, so that those of us who are looking for evidence to persuade coworkers of the value of this don't have to spend time doing the research. The list I have right now:

• Stripe, e.g. customers are cus_NffrFeUfNV2Hib
• Jetify (unsure about examples)
• Vercel, e.g. deployments are dpl_4UoGcLSZDZvoik6MvAANu9jVVLsX

[sxlijin]

GitHub and OpenAI's API keys also reflect this pattern (gha_<secret> and sk_<secret>)

[wparad]

We use this over at Authress, some of them are typeId, some of them are prefix plus base5X or base3X when we want case insensitive. Technically it would be the typeid-js variant, but I don't know if that matters.