Add focus argument to move-window-to-workspace (#1332)

* layout: add focus flag to move-window-to-workspace

* lib: update comment

* misc: minor dup refactor

* input: format code

* layout: minor nit

* layout: update comment

* input: remove unnecessary conditionals

* misc: replace boolean

* tests: fix the failing one

* layout: change to smart

* ipc: Option<bool> -> bool

* lib: format code

* Rewrite focus doc comment

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Co-authored-by: Ivan Molodetskikh <yalterz@gmail.com>

niri-ipc/src/lib.rs

@@ -426,6 +426,14 @@ pub enum Action {
         /// Reference (index or name) of the workspace to move the window to.
         #[cfg_attr(feature = "clap", arg())]
         reference: WorkspaceReferenceArg,
+
+        /// Whether the focus should follow the moved window.
+        ///
+        /// If `true` (the default) and the window to move is focused, the focus will follow the
+        /// window to the new workspace. If `false`, the focus will remain on the original
+        /// workspace.
+        #[cfg_attr(feature = "clap", arg(long, action = clap::ArgAction::Set, default_value_t = true))]
+        focus: bool,
     },
     /// Move the focused column to the workspace below.
     MoveColumnToWorkspaceDown {},