Secret scanning

closes #173 (closed)
Adds truffleHog3 secret scanning to feature branches of the pipeline
Failed when secret found: https://repo1.dso.mil/dsop/opensource/pipeline-test-project/ubi8/-/jobs/2757704
Succeed when secret removed via rebase: https://repo1.dso.mil/dsop/opensource/pipeline-test-project/ubi8/-/jobs/2757754

After updating the job logic I tested and it still is failing and passing as expected

• https://repo1.dso.mil/dsop/opensource/pipeline-test-project/ubi8/-/jobs/2762666
• https://repo1.dso.mil/dsop/opensource/pipeline-test-project/ubi8/-/jobs/2762686

Also reorganized the preflight stage directory