Add. optional intercept only inbound/outbound calls.

Note.
  * `inbound` is call to some extension
  * `outbound` is call from some extension to external number.

Currently there no way to find call from extension to extension as `outbound`

resources/install/scripts/intercept_group.lua

@@ -15,4 +15,7 @@
 --	The Original Code is FusionPBX
 --
 
+-- shift arguments
+	argv[1], argv[2] = nil, argv[1]
+
 require "intercept"