adding an event on rule exfiltrating artifacts via kubernetes control plane with the utility of creating kind cluster

[h4l0gen]

What type of PR is this?

Uncomment one (or more) /kind <> lines:

/kind bug

/kind cleanup

/kind documentation

/kind tests

/kind feature

Any specific area of the project related to this PR?

Uncomment one (or more) /area <> lines:

/area commands

/area pkg

/area events

What this PR does / why we need it:

Which issue(s) this PR fixes:

Fixes #192

Special notes for your reviewer:

[poiana]

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[h4l0gen]

This PR involves the following steps:

• First, it creates a kind cluster and places the kubeconfig file in the Host's /tmp directory.
• Next, it calls the waitForClusterReadiness function to ensure that the cluster is fully prepared.
• Then, it creates a test pod and a test container inside it, after creating a new default service account. A new function called newTestPod is defined, which specifies the configuration for the test container. Initially, it creates the /tmp/created-by-event-generator.txt file, which will be copied using kubectl cp later.
• Following that, it calls verifyPodAndContainerRunning to verify that the pod and container are fully prepared and operational.

For cleanup:

• Initially, it calls deleteTestPod.
• Finally, it deletes the kind cluster by calling deleteKindCluster.

I've separated the above setup from the event as it can be reused (as a utility).
Finally, in event ExfiltratingArtifactsViaKubernetesControlPlane:

createKindCluster
waitForClusterReadiness
createTestPod
copyFileFromContainer
deleteTestPod
deleteKindCluster

Functions are called in sequence. copyFileFromContainer runs the kubectl cp command and deletes the copied file in the host's /tmp directory.

[h4l0gen]

Rule triggered successfully

[h4l0gen]

@leogr @FedeDP @jasondellaluce PTAL at this PR and provide me your valuable feedback. Thank you :)