chore: rewrite the backend (not tested) (#203)

* wip: refactor

* refactor

* clean up

* .

* rename

* add relay auth

* .

* .

* optimize

* .

* clean up

* add encryption crate

* .

* .

* .

* .

* .

* add encryption crate

* .

* refactor nip4e

* .

* fix endless loop

* fix metadata fetching

crates/auto_update/Cargo.toml

@@ -6,7 +6,7 @@ publish.workspace = true
 
 [dependencies]
 common = { path = "../common" }
-states = { path = "../states" }
+state = { path = "../state" }
 
 gpui.workspace = true
 gpui_tokio.workspace = true