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/tab/mod.rs

@@ -1,6 +1,7 @@
+use gpui::prelude::FluentBuilder;
 use gpui::{
-    div, prelude::FluentBuilder, px, AnyElement, App, Div, ElementId, InteractiveElement,
-    IntoElement, ParentElement, RenderOnce, Stateful, StatefulInteractiveElement, Styled, Window,
+    div, px, AnyElement, App, Div, ElementId, InteractiveElement, IntoElement, ParentElement,
+    RenderOnce, Stateful, StatefulInteractiveElement, Styled, Window,
 };
 use theme::ActiveTheme;