quick-lint-js build sizes

Generate data.json by following these instructions:

  1. Install LLVM, ensuring you have the llvm-size command.
  2. Mount c.quick-lint-js.com using sshfs:
    $ mkdir c.quick-lint-js.com/
    $ sshfs github-ci@c.quick-lint-js.com:/var/www/c.quick-lint-js.com/ c.quick-lint-js.com/
  3. Generate missing build-sizes.json files:
    $ for b in c.quick-lint-js.com/builds/*; do if [ -f "${b}/build-sizes.json" ]; then continue ; fi ; (cd "${b}" ; ./tools/collect-binary-sizes . >build-sizes.json) ; done
  4. Create data.json:
    $ ./tools/aggregate-binary-sizes c.quick-lint-js.com/builds/ >website/build-sizes/data.json