Update the manifest twice to work around manifest generation issue.
My theory is that the new VCS-based cache that's used when generating the manifest gets confused when files that match a gitignore rule are added for the first time. Updating the manifest twice makes the problematic files disappear from the manifest, and I'm not inclined to spend any more time chasing this bug. Fixes#22275.
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Package and release the Servo magicleap app
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Package the Magic Leap Servo2D app, and build and release it nightly.
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- [X] `./mach build -d` does not report any errors
- [X] `./mach test-tidy` does not report any errors
- [X] These changes do not require tests because we don't test ML
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Upgrade mozjs.
- [x] `./mach build -d` does not report any errors
- [x] `./mach test-tidy` does not report any errors
- [x] These changes fix#21469
- [x] There are tests for these changes
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Rewrite Taskcluster integration
This rewrites this repository’s integration with Taskcluster to have a decision task that runs an in-tree Python script to schedule a graph of other tasks with inter-dependencies, saved build artifacts, Docker images built from in-tree `Dockerfile`s, etc. This also adds support fail daily tasks, run automatically every 24 hours. See `etc/ci/taskcluster/README.md` for more details.
Example of a green build with web-platform-tests enabled: https://tools.taskcluster.net/groups/aDL0pUBkSmuhezT1OF80_g
For now this PR only enables one task, equivalent to Buildbot’s `linux-dev` job. (Running Tidy and other linting tools, compiling in debug mode, and running unit tests.) At this time Homu does **not** yet block PRs from merging on a successful result from Taskcluster, but I plan to do this soon after this PR lands.
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