add "inputs" page

Signed-off-by: Hadi <[email protected]>

internal/ui/input/messages.go

@@ -0,0 +1,27 @@
+package input
+
+// checkMsg carries the result of input.CheckAvailable (hyprctl).
+type checkMsg struct{ err error }
+
+// tickMsg triggers a periodic refresh of layout + sensitivity while this
+// page is active, so it reflects layout/sensitivity changes made elsewhere
+// (hyprland.conf reload, another tool).
+type tickMsg struct{}
+
+type layoutMsg struct {
+	layout string
+	err    error
+}
+
+type setLayoutMsg struct{ err error }
+
+type sensitivityMsg struct {
+	value float64
+	err   error
+}
+
+type setSensitivityMsg struct{ err error }
+
+// resetMsg carries the result of resetting both the keyboard layout and
+// mouse sensitivity to their hyprland.conf values.
+type resetMsg struct{ err error }