Add `vcbuild cpplint` and and update CONTRIBUTING.md

  • Platform: windows
  • Subsystem: test, cpplint

Implement cpplint for vcbuild.bat (i.e. a windows version of the equivalent Makefile target). Then lint can be implemented as jslint and cpplint.

See #11151 (comment).

The line in #11151 can then be updated to reflect this addition (i.e. suggest that people use vcbuild lint).

Optimistically marking this as a good first contribution as it should be a self-contained bit of Windows syntax to run tools/cpplint.py and tools/check-imports.py.

If you'd like to have a go at this then please comment here to let other people know. You can follow the guide in CONTRIBUTING.md to submit a PR.