Module signal

Functions

• rust_listener_create
• rust_listener_destroy^⚠
• rust_listener_get_user_data^⚠
• rust_listener_set_user_data^⚠
• wl_signal_add^⚠
• wl_signal_emit^⚠
• wl_signal_get^⚠
• wl_signal_init^⚠