Add Accepted condition to TLSPolicy

[maleck13]

What

Based on https://github.com/Kuadrant/architecture/blob/main/rfcs/0004-policy-status.md we want to have some consistent status in place.

One of those status conditions is the Ready condition which is already present in TLSPolicy.

But we want to add a new condition Accepted this is in affect that the controller has validated that the policy is correct and valid and ready to be acted on. Things that may cause this not to be the case

• TLSPolicy targeting a non gateway resource
• TLSPolicy targeting a resource that has been deleted or not found
• Another TLSPolicy being present and targeting the same ref

Done

• Add logic to validate and calculate the correct Accepted condition in the TLSPolicy controller based on the RFC
• Add new tests where appropriate
• Update the TLSPolicy reference doc to call out the new status conditions https://docs.kuadrant.io/multicluster-gateway-controller/docs/dnspolicy/dns-policy/

[philbrookes]

This issue is stale because it has been open for 60 days with no activity.

[KevFan]

This is probably completed as part of Kuadrant/kuadrant-operator#416

[maleck13]

Agreed we def have teh accepted conditions