ofxAssimpModelLoader android arm64-v8a issue

[dottoremad]

I get a linker failure for androidAssimpExample, if I select the build variant android-arm64.
I am currently using of 0.11.0, using Android Studio version 4.0.1 on Windows 10.
It seems to me the following lines are missing at addon_config.mk:

android/arm64-v8a:
ADDON_LIBS=
ADDON_LIBS+=libs/assimp/lib/android/arm64-v8a/libassimp.a
ADDON_LIBS+=libs/assimp/lib/android/arm64-v8a/libIrrXML.a

By adding those lines, everything works as intended.

[arturoc]

Thanks, could you send a PR adding this lines to addon_config.mk