add client hook for UNIGNORE

UNIGNORE is the hook to watch for wl clients as they are added; the
ignore mechanism prevents most of the compositor from processing
clients. this is a stupid method from an api perspective since it's
different in x11 and wl, so it should probably be improved on in the future

src/bin/e_client.c

@@ -2568,6 +2568,7 @@ e_client_unignore(E_Client *ec)
           focus_stack = eina_list_append(focus_stack, ec);
      }
    _e_client_event_simple(ec, E_EVENT_CLIENT_ADD);
+   _e_client_hook_call(E_CLIENT_HOOK_UNIGNORE, ec);
 }
 
 E_API E_Client *

src/bin/e_client.h

@@ -169,6 +169,7 @@ typedef enum _E_Client_Hook_Point
    E_CLIENT_HOOK_DEL,
    E_CLIENT_HOOK_UNREDIRECT,
    E_CLIENT_HOOK_REDIRECT,
+   E_CLIENT_HOOK_UNIGNORE,
    E_CLIENT_HOOK_LAST,
 } E_Client_Hook_Point;