feat: add focus-column-or-monitor-left, focus-column-or-monitor-right (#456)

* feat: add support for focus-window-or-monitor

* addresses output without window case

* refactor: reduce verbosity

* update this..

* refactor: rename `maybe_focus_window` functions

* refactor: flip focus_window_or_output return logic

* Update src/layout/mod.rs

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

* refactor: rename to Column

* move blocks next to other Column variables

---------

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

niri-config/src/lib.rs

@@ -946,6 +946,8 @@ pub enum Action {
     FocusColumnLast,
     FocusColumnRightOrFirst,
     FocusColumnLeftOrLast,
+    FocusColumnOrMonitorLeft,
+    FocusColumnOrMonitorRight,
     FocusWindowDown,
     FocusWindowUp,
     FocusWindowDownOrColumnLeft,
@@ -1022,6 +1024,8 @@ impl From<niri_ipc::Action> for Action {
             niri_ipc::Action::FocusColumnLast => Self::FocusColumnLast,
             niri_ipc::Action::FocusColumnRightOrFirst => Self::FocusColumnRightOrFirst,
             niri_ipc::Action::FocusColumnLeftOrLast => Self::FocusColumnLeftOrLast,
+            niri_ipc::Action::FocusColumnOrMonitorLeft => Self::FocusColumnOrMonitorLeft,
+            niri_ipc::Action::FocusColumnOrMonitorRight => Self::FocusColumnOrMonitorRight,
             niri_ipc::Action::FocusWindowDown => Self::FocusWindowDown,
             niri_ipc::Action::FocusWindowUp => Self::FocusWindowUp,
             niri_ipc::Action::FocusWindowDownOrColumnLeft => Self::FocusWindowDownOrColumnLeft,