Add gitlab-ci file

image: "registry.gitlab.e.foundation/e/os/docker-android-apps-cicd:latest"

stages:

- build

- deploy

build-job:

  stage: build

  script:

    - gradle build

  artifacts:

    paths:

      - build/libs

deploy:

  stage: deploy

  script:

    - gradle publish

  only:

    - master