create staging and prod apks

Description

Update gitlab ci so that it can create both prod and staging apks. For all our build variants. Have also cleaned up the file and removed duplicates

Issues

https://gitlab.e.foundation/e/os/backlog/-/issues/3481

10 commandments of code review

👪 ❤️ https://gitlab.e.foundation/groups/e/-/wikis/contribute/development-processes/code-review-guidelines

Summary by CodeRabbit

• Refactor

  • Streamlined the build pipeline by separating production and staging build jobs, each generating their own APK artifacts.
  • Modularized APK generation into distinct jobs for production and staging, improving clarity and artifact handling.
  • Updated job dependencies and execution order for better maintainability and reliability.

• Chores

  • Simplified and cleaned up CI configuration, removing unnecessary package installations and redundant rules.