add script to out put list of files containing linting errors

[angela-lee1]

Fixes #1968

What changes did you make and why did you make them?

"To streamline linting remediation across the VRMS codebase, we need a script that outputs a list of files with linting errors. This will help prioritize fixes and track progress, and align work across team members."

• Create a reusable script, scripts/list-lint-files.js.
• Add the command "lint:files": "node scripts/list-lint-files.js"in the package.json
• It outputs a list of affected files in JSON format with a relative file path.
• It outputs the total number of affected files in a TXT file.

[jng34]

@angela-lee1 The script works as expected; lint report and files count were generated.