use DragSwitch in Column

Signed-off-by: kernelkind <kernelkind@gmail.com>

crates/notedeck_columns/src/column.rs

@@ -1,5 +1,6 @@
 use crate::{
     actionbar::TimelineOpenResult,
+    drag::DragSwitch,
     route::{Route, Router, SingletonRouter},
     timeline::{Timeline, TimelineCache, TimelineKind},
 };
@@ -13,6 +14,7 @@ use tracing::warn;
 pub struct Column {
     pub router: Router<Route>,
     pub sheet_router: SingletonRouter<Route>,
+    pub drag: DragSwitch,
 }
 
 impl Column {
@@ -21,6 +23,7 @@ impl Column {
         Column {
             router,
             sheet_router: SingletonRouter::default(),
+            drag: DragSwitch::default(),
         }
     }