prs on Nostr: Add trie-based user search cache to replace non-performant linear scans (#1342) ...

Add trie-based user search cache to replace non-performant linear scans (#1342)

Changelog-Added: Add trie-based user search cache to replace non-performant linear scans

Fixes: https://github.com/damus-io/damus/issues/1219

https://github.com/damus-io/damus/assets/963907/17143c94-922a-4b88-8b77-950ad1a72634

https://github.com/damus-io/damus/assets/963907/d1765205-a66c-4d18-a014-b4e9ca9c4ace



trie, 1 commits

https://github.com/damus-io/damus/pull/1342