chore: complete fumadocs -> @hanzo/docs rebrand

- Rename all packages from fumadocs-* to @hanzo/docs-*
- Update all imports across apps, examples, and packages
- Update documentation and content references
- Sync lockfile with new package names

examples/openapi/scripts/generate-docs.ts

@@ -1,4 +1,4 @@
-import * as OpenAPI from 'fumadocs-openapi';
+import * as OpenAPI from '@hanzo/docs/openapi';
 import { rimraf } from 'rimraf';
 import { openapi } from '@/lib/openapi';