(feat): added/updated e2e tests

[VedRatan]

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Description

This PR adds and updates the existing e2e tests with caldera complaint tests, so that we can monitor the behaviour of policy engines correctly on any changes in the codebase.

Fixes #193

Does this PR introduce a breaking change?

Checklist

• [x] PR title follows the <type>: <description> convention
• [ ] I use conventional commits in my commit messages
• [x] I have updated the documentation accordingly
• [ ] I Keep It Small and Simple: The smaller the PR is, the easier it is to review and have it merged
• [ ] I have performed a self-review of my code
• [ ] I have added tests that prove my fix is effective or that my feature works
• [ ] New and existing unit tests pass locally with my changes

Additional information for reviewer

Mention if this PR is part of any design or a continuation of previous PRs