Add Windows Desktop export with RanaZe branding

Replace the default Godot boot splash and exe icon with the RanaZe
mark so a Windows build reads as RanaZe from first launch, not the
engine it's built on.

project.godot

@@ -17,6 +17,10 @@ config/features=PackedStringArray("4.6", "GL Compatibility")
 config/icon="res://assets/branding/ranaze-app-icon.png"
 config/use_custom_user_dir=true
 config/custom_user_dir_name="MedMind"
+boot_splash/bg_color=Color(0.019607844, 0.02745098, 0.05882353, 1)
+boot_splash/image="res://web/ranaze-loader-icon-v1.png"
+boot_splash/fullsize=false
+boot_splash/use_filter=true
 
 [autoload]