Setting up GitLab CI for Android projects

This post details the setup of GitLab CI for Android projects, including the creation of a `.gitlab-ci.yml` file. It covers defining Docker images, variables for Android SDK compilation, installing necessary packages and the Android SDK, defining build and test stages, and configuring jobs for linting, assembling, and running debug tests. It also provides a snippet for a basic `.gitlab-ci.yml` and explains how to retrieve build artifacts.