Store RN Tester and Template APKs for Android on CI (#35463)

Summary:
Pull Request resolved: #35463

This will allow us to easily retrieve debug/release APK for
both RN-Tester and the Template jobs for every run of the CI.

Changelog:
[Internal] [Changed] - Store RN Tester and Template APKs for Android on CI

Reviewed By: cipolleschi

Differential Revision: D41521977

fbshipit-source-id: e2ed60921fd005425d3915323b18dde2851e7fc2

Author: cortinico

.circleci/config.yml

@@ -723,6 +723,10 @@ jobs:
       - report_bundle_size:
           platform: android
 
+      - store_artifacts:
+          path: ~/react-native/packages/rn-tester/android/app/build/outputs/apk/
+          destination: rntester-apk
+
       # Optionally, run disabled tests
       - when:
           condition: << parameters.run_disabled_tests >>
@@ -782,6 +786,10 @@ jobs:
             fi
             ./gradlew assemble<< parameters.flavor >> -PREACT_NATIVE_MAVEN_LOCAL_REPO=/root/react-native/maven-local
 
+      - store_artifacts:
+          path: /tmp/$PROJECT_NAME/android/app/build/outputs/apk/
+          destination: template-apk
+
   # -------------------------
   #    JOBS: Test iOS Template
   # -------------------------