Add DeepWiki Badge Maker for automatic reindexing

[masteroleg]

What is DeepWiki?

DeepWiki provides up-to-date documentation you can talk to, for every repo in the world. Add this badge to your repository to help users find documentation.

[anchildress1]

Context7 also does this and is versioned, so you can match a specific release if your current working version falls behind.

@localden @jflam are these worth linking in the README.md or somewhere else in the docs, perhaps? There's very few, very targeted list of badges on the main page currently, so your call.