feat(cli): adds `--assertions` option

[github-actions[bot]]

If these changes look good, signoff on them with:

git pull && git commit --amend --signoff && git push --force-with-lease origin

If they aren't any good, please remove them with:

git pull && git reset --hard HEAD~1 && git push --force-with-lease origin

[sonarcloud[bot]]

Quality Gate failed

Failed conditions
75.2% Coverage on New Code (required ≥ 80%)

See analysis details on SonarCloud

[dmihalcik-virtru]

merged with https://github.com/opentdf/client-web/pull/371