Add hardened AuthorizationPolicies

Add support for .Values.hardened similar to the old istio package which included:

• support for custom AuthorizationPolicies via .Values.hardened.customAuthorizationPolicies
• default deny AuthorizationPolicy similar to what was in old istio package - https://repo1.dso.mil/search?search=%22hardened.enabled%22&nav_source=navbar&project_id=3550&group_id=29934&search_code=true&repository_ref=main