add dock layout component

crates/data/Cargo.toml

@@ -6,6 +6,7 @@ description = "Data-heavy GPUI components: lists, trees, tabs, sidebars — one
 
 [dependencies]
 gpui = { workspace = true }
+gpui-native-core = { workspace = true, optional = true }
 gpui-native-icons = { workspace = true }
 gpui-native-theme = { workspace = true }
 gpui-native-utils = { workspace = true }
@@ -18,5 +19,5 @@ default = ["full"]
 full = ["list", "sidebar", "tabs", "tree"]
 list = []
 sidebar = []
-tabs = []
+tabs = ["dep:gpui-native-core", "gpui-native-core/button"]
 tree = []