changement du scene manager, amélioration du cockpit et autres

* refonte du scene manager
* refonte du audio manager
* premier rework des plantes
* nettoyage des dossiers/fichiers
* renommage de planète en region
* fix des run

gui/menu/assets/texture/abre1glow.png.import

@@ -1,34 +0,0 @@
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