CI: Build the APK as well as the AAB

The APK is useful for debugging, as one cannot easily install the AAB
from the command line.

.circleci/config.yml

@@ -29,6 +29,9 @@ jobs:
       - store_artifacts:
           path: build/app/outputs/bundle/release/app.aab
           destination: gitjournal.aab
+      - store_artifacts:
+          path: build/app/outputs/bundle/release/app.apk
+          destination: gitjournal.apk
       - run:
           name: Upload Crashlytics Symbols
           command: ./scripts/android_crashlytics.sh

scripts/build.sh

@@ -6,3 +6,4 @@ BUILD_NUM=`git rev-list --count HEAD`
 echo "Build Number: $BUILD_NUM"
 
 flutter build appbundle --build-number=$BUILD_NUM --verbose
+flutter build apk --build-number=$BUILD_NUM --verbose