add llvm-dev to Debian requirements
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---
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- [ ] `./mach build -d` does not report any errors
- [X] `./mach test-tidy` does not report any errors
- [X] These changes fix#24852 (GitHub issue number if applicable)
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- [ ] There are tests for these changes OR
- [X] These changes do not require tests because it's the build process itself, not servo code
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Initial implementation of WebGPU API
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- Added the WebIDL bindings for GPU and GPUadapter interfaces.
- Created a background thread for WebGPU api calls.
- Established the async communication between the background thread and the WebGPU interfaces.
- Implemented the `requesAdapter` function of `navigator.gpu`
`./mach test-tidy` reports an error due to the different `arrayvec` version used in `servo` and `webgpu`, so added it to the ignore list in `servo-tidy.toml`
---
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- [x] `./mach build -d` does not report any errors
- [ ] `./mach test-tidy` does not report any errors
- [ ] These changes addresses a part of #https://github.com/servo/servo/issues/24706
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cc @jdm, cc @kvark
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This change is [<img src="https://reviewable.io/review_button.svg" height="34" align="absmiddle" alt="Reviewable"/>](https://reviewable.io/reviews/servo/servo/24708)
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This adds lines such as
```
Completed cssparser v0.27.1 custom-build in 2.4s
Completed cssparser v0.27.1 custom-build (run) in 0.6s
Completed cssparser v0.27.1 in 1.1s
```
mach bootstrap - activate virtual env
This modifies the `./mach bootstrap` script to activate the python virtual environment, fixing issues on systems that don't have `six` and `distro` pre-installed.
---
<!-- Thank you for contributing to Servo! Please replace each `[ ]` by `[X]` when the step is complete, and replace `___` with appropriate data: -->
- [x] `./mach build -d` does not report any errors
- [x] `./mach test-tidy` does not report any errors
- [x] These changes fix#24561 (also relevant to #24541)
<!-- Either: -->
- [ ] There are tests for these changes OR
- [x] These changes do not require tests because they are in the `./mach bootstrap` script - although this may be something that could be checked in CI - Is there any interest in setting this up?
Adding a check for "Linux Mint" with a space
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While trying to run `./mach bootstrap` on Linux Mint I encountered the following error:
```
$ ./mach bootstrap
Traceback (most recent call last):
File "./mach", line 103, in <module>
main(sys.argv)
File "./mach", line 31, in main
sys.exit(mach_bootstrap.bootstrap_command_only(topdir))
File "/home/gmartin/servo/python/mach_bootstrap.py", line 234, in bootstrap_command_only
bootstrap(context, force)
File "/home/gmartin/servo/python/servo/bootstrap.py", line 403, in bootstrap
distrib, version = get_linux_distribution()
File "/home/gmartin/servo/python/servo/bootstrap.py", line 391, in get_linux_distribution
raise Exception('mach bootstrap does not support %s, please file a bug' % distrib)
Exception: mach bootstrap does not support Linux Mint, please file a bug
```
The solution is to add another check for Linux Mint which included a space in the distro name.
Question: Is it generally a requirement to open an issue if I also have the fix ready to go (as is the case here)?
---
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- [X] `./mach test-tidy` does not report any errors
- [ ] These changes fix #___ (GitHub issue number if applicable)
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- [X] These changes do not require tests because I couldn't find any existing unit tests for [python/servo/bootstrap.py](python/servo/bootstrap.py)
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