chore: find kor exceptions script

[doronkg]

What this PR does / why we need it?

This PR add a hack folder into kor, to include future useful scripts for contributors. It also includes the initial script find_exceptions.sh to discover false-positive default resources, the output of this script could be merged to pkg/kor/exceptions to be ignored by kor.

This script should be used in issues like #236, #240 for intsance.

Output Example

```console $ ./find_exceptions.sh Processing completed for ConfigMaps, output saved to exceptions/configmaps.json Processing completed for Secrets, output saved to exceptions/secrets.json Processing completed for ServiceAccounts, output saved to exceptions/serviceaccounts.json $ cat exceptions/configmaps.json { "exceptionConfigMaps": [ { "Namespace": "kube-system", "ResourceName": "bootstrap" }, { "Namespace": "kube-system", "ResourceName": "cluster-config-v1" }, { "Namespace": "kube-system", "ResourceName": "openshift-service-ca.crt" }, { "Namespace": "kube-system", "ResourceName": "root-ca" } ] } ```

PR Checklist

• [ ] This PR adds K8s exceptions (false positives)
• [x] This PR adds new code
• [ ] This PR includes tests for new/existing code
• [x] This PR adds docs

GitHub Issue

[XX-XX]

Notes for your reviewers

The find_exceptions.sh does not squash resources that appear in multiple namespaces, for example, if a ConfigMap is created in every namespace, the output will not display as so:

    {
      "Namespace": "*",
      "ResourceName": "kube-root-ca.crt"
    }

The script eases the process to map the default resources, but requires manual intervention (regex, merging, etc).

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 40.96%. Comparing base (852a6f9) to head (77155bc). Report is 1 commits behind head on main.

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Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #288 +/- ## ======================================= Coverage 40.96% 40.96% ======================================= Files 58 58 Lines 2910 2910 ======================================= Hits 1192 1192 Misses 1530 1530 Partials 188 188 ```

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[doronkg]

Rebasing issues, I’ll re-submit it.

[pbr0ck3r]

We should add a way to sort the JSON (alphabetize it) as well.