Add missing wscript file

libs/ctrl-interface/wscript

@@ -0,0 +1,33 @@
+#!/usr/bin/env python
+from waflib.extras import autowaf as autowaf
+from waflib import Options
+
+# Mandatory variables
+top = '.'
+out = 'build'
+
+children = [
+    'control_protocol',
+    'midi_surface'
+]
+
+def options(opt):
+    autowaf.set_options(opt)
+
+def sub_config_and_use(conf, name, has_objects = True):
+    conf.recurse(name)
+    autowaf.set_local_lib(conf, name, has_objects)
+
+def configure(conf):
+    global children
+    autowaf.set_recursive()
+    for i in children:
+        sub_config_and_use(conf, i)
+
+def build(bld):
+    global children
+    for i in children:
+        bld.recurse(i)
+
+def shutdown():
+    autowaf.shutdown()