Implement init/deinit of inotify system

Use RAII to handle inotify resource lifetime, i.e. initialize with actor
creation and deinitialize with actor deletion.

Sources/CInotify/module.modulemap

@@ -0,0 +1,4 @@
+module CInotify [system] {
+	header "cinotify.h"
+	export *
+}