Build artifacts to support artifact builds of Tor/Muillvad/Base Browser

Artifact builds are useful for developers who do not work with compiled code. They consume pre-built artifacts and make the build process faster, because they build less things. They also make the build process easier, because they require less build dependencies.

We can generate these artifacts from any build. Which means we can generate them alongside the usual tor-browser-build process and put them in the out/ folder for developers to use in their builds.

This works pairs well with the work done on #41418 (closed). Developers will be able to download the artifacts from the nightlies out folder and get started quicker (if their work can be done on artifact builds).

Ideally, we would have the artifacts for multiple revisions available for download. Instead of just he latest nightly revision. That work in our of scope for this ticket.

Edited Apr 28, 2025 by brizental

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