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

* refactor

* update

* .

* rustfmt

* .

* .

* .

* .

* .

* add document

* .

* add logout

* handle error

* chore: update gpui

* adjust timeout

crates/ui/src/input/change.rs

@@ -1,4 +1,5 @@
-use std::{fmt::Debug, ops::Range};
+use std::fmt::Debug;
+use std::ops::Range;
 
 use crate::history::HistoryItem;