chore: refactor the global state and improve signer (#56)

* refactor

* update

* .

* rustfmt

* .

* .

* .

* .

* .

* add document

* .

* add logout

* handle error

* chore: update gpui

* adjust timeout

crates/global/Cargo.toml

@@ -5,9 +5,14 @@ edition.workspace = true
 publish.workspace = true
 
 [dependencies]
+nostr-keyring.workspace = true
+nostr-connect.workspace = true
 nostr-sdk.workspace = true
 dirs.workspace = true
 smol.workspace = true
+futures.workspace = true
+log.workspace = true
+anyhow.workspace = true
 
 whoami = "1.5.2"
 rustls = "0.23.23"