chore: enable ETC2/ASTC texture compression for Android export

project.godot

@@ -1,6 +1,10 @@
 ; Engine configuration file.
 ; It's best edited using the editor UI and not directly,
-; but this is the source of truth for engine configuration.
+; since the parameters that go here are not all obvious.
+;
+; Format:
+;   [section] ; section goes between []
+;   param=value ; assign values to parameters
 
 config_version=5
 
@@ -35,3 +39,4 @@ pointing/emulate_touch_from_mouse=true
 
 renderer/rendering_method="gl_compatibility"
 renderer/rendering_method.mobile="gl_compatibility"
+textures/vram_compression/import_etc2_astc=true