fix(operator): recommended policies deletion logic

[rootxrishabh]

Purpose of PR?:
If a user creates policies with the same name in the recommend policy folder then the operator auto deletes it. The operator should only manage the policies that it owns. This PR fixes that by adding an annotation to all policies created by the operator.

Fixes #

Does this PR introduce a breaking change?

If the changes in this PR are manually verified, list down the scenarios covered::

Additional information for reviewer? :
Mention if this PR is part of any design or a continuation of previous PRs

Checklist:

• Bug fix. Fixes #
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• This change requires a documentation update
• PR Title follows the convention of <type>(<scope>): <subject>
• Commit has unit tests
• Commit has integration tests

[rootxrishabh]

Tested on GKE. Working as expected -

root@rootxrishabh /h/rootxrishabh [1]# k create -f cpol.yaml
kubearmorclusterpolicy.security.kubearmor.com/harden-pkg-mngr-exec created
root@rootxrishabh /h/rootxrishabh# k get kubearmorclusterpolicy
NAME                   AGE
harden-pkg-mngr-exec   5m15s
test                   3h2m