Add git-secrets check to npm preinstall on fecfile-web-app

[exalate-issue-sync]

Add a check to see if git-secrets is installed when a developer installs the front end. If not, cancel the install. Alert the dev that they need to install git-secrets.

The scripting that we want to add to preinstall has already been worked out by Elaine Krauss https://github.com/fecgov/fecfile-web-api/pull/1220/files (also Elaine identified some snippets to remove in that pr that would be great to get rid of in this ticket)

QA Notes

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DEV Notes

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Design

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See full ticket and images here: FECFILE-1900