build: add LINT_CPP_FILES to checkimports check

This commit adds the prerequisites which contains all the files to lint.
Currently the only the files in 'src' will be checked.

PR-URL: https://github.com/nodejs/node/pull/33697


Reviewed-By: Richard Lau <riclau@uk.ibm.com>
Reviewed-By: Michaël Zasso <targos@protonmail.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>