Zip ppsspp assets

Author: ethanaobrien

cores.json

@@ -664,7 +664,7 @@
             "buildpath": "./",
             "makescript": "",
             "arguments": [],
-            "build_command": "cd libretro/emscripten/ && bash build_emscripten.sh && cd ../../ && cp -r libretro/emscripten/build/ ../RetroArch/ffmpeg && cp libretro/emscripten/build/*.bc ../RetroArch/emulatorjs/",
+            "build_command": "cd libretro/emscripten/ && bash build_emscripten.sh && cd ../../ && cp -r libretro/emscripten/build/ ../RetroArch/ffmpeg && cp libretro/emscripten/build/*.bc ../RetroArch/emulatorjs/ && cd assets && zip -r ../../../output/ppsspp-assets.zip * && cd ..",
             "build_retroarch_command": "emmake ./build-emulatorjs.sh --clean --threads"
         },
         "options": {