adds game over credits (#74)

## Changes
- Adds game over credits

Reviewed-on: gymkhana/gymkhana#74
Reviewed-by: Eneko Nieto <eneko@eneko.ovh>
Co-authored-by: oier <oierbravo@gmail.com>
Co-committed-by: oier <oierbravo@gmail.com>

gymkhana/rooms/turno_cocina/creditos/esc/creditos.esc

@@ -0,0 +1,23 @@
+:setup
+play_snd res://gymkhana/sounds/intro_menu_loop.ogg _music
+accept_input NONE
+set_gui_visible false
+set_global turno_cocina_creditos_return_to_menu_evisible false
+set_interactive eneko_head false
+transition fade_black out 2.0
+
+:ready
+set_gui_visible false
+set_global game_over true
+transition fade_black in 2.0
+
+say oier_head "No se me ocurre nada que decir."
+say eneko_head "A mi tampoco."
+say eneko_head "Fumamos!?"
+say oier_head "Me pasas un filttro?"
+say eneko_head "..."
+say eneko_head "¡%&@@4!"
+say oier_head "Ok"
+say oier_head "Lanzamos los creditos?"
+say eneko_head "Daleee!"
+set_global turno_credits_rolling true