ci(lint): error on fs-extra import

[Hweinstock]

Problem

we want to avoid contributors using fs-extra package, and prefer our fs wrapper.

Solution

Have ESLint do the job for us, error on attempting to import fs-extra.

Notes

• the script files that already use fs-extra have been given exceptions since we don't need these to run in web.
• A few fs-extra references existed, and were replaced.

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License: I confirm that my contribution is made under the terms of the Apache 2.0 license.

[github-actions]

This pull request modifies code in src/ but no tests were added/updated. Confirm whether tests should be added or ensure the PR description explains why tests are not required.

[github-actions]

This pull request implements a feature or fix, so it must include a changelog entry. See CONTRIBUTING.md#changelog for instructions.

[justinmk3]

the script files that already use fs-extra have been given exceptions since we don't need these to run in web.

If it's not much work to use node's 'fs' in those files, then that would allow us to remove the fs-extra dependency.