Add helper constructor for inputs

modules/ces/component/inputs.scm

@@ -2,6 +2,7 @@
   #:pure
   #:use-module (scheme base)
   #:export (make-inputs
+            create-inputs
             inputs?
             inputs-begun
             inputs-ended
@@ -17,3 +18,6 @@
   (started inputs-begun)
   (ended inputs-ended)
   (current inputs-current))
+
+(define (create-inputs)
+  (make-inputs '() '() '()))