* [presubmit] Enforce language attribute in projectt.yaml to be always set.
* Update documentation, better presubmit check, new project template.
* add docstring to templates.py
* Add example values in the project.yaml template and remove python value for now
* Add "project: c++" to 256 projects
* format
* Add labels and selective_unpack sections to the presubmit check
* fix incorrect auto_ccs format in three projects
* fix nss emails after rebase
Maintainers who own these projects: If you don't want i386 fuzzing, feel free to disable.
I figured i386 fuzzing is generally desirable since it can find more bugs but most projects won't switch because of inertia.
The patch avoids listing fuzzer names in order to be able to add new upstream
fuzzers without having to worry about updating the oss-fuzz build script.