Make include directives work in .mnu files

internal/ui/dialogue.go

@@ -0,0 +1,20 @@
+package ui
+
+import (
+	"code.ur.gs/lupine/ordoor/internal/menus"
+)
+
+func init() {
+	// Needed for Keyboard.mnu (main -> options -> keyboard).
+	// Dialogues can be active(?) or not. If they're not, then they are hidden.
+	// Dialogues seem to be modal in all cases?
+	registerBuilder(menus.TypeDialogue, registerDebug("WIP Dialogue", registerDialogue))
+}
+
+func registerDialogue(d *Driver, r *menus.Record) ([]*menus.Record, error) {
+	// The dialogue itself has a sprite
+	_, err := registerNoninteractive(d, r)
+
+	// TODO: we need to group these. Z levels seem overkill?
+	return r.Children, err
+}