Clean up the CTLog vs TLog confusion in the API.
Description
Due to a series of unfortunate events the field name that points to Transparency Log (aka, Rekor) is incorrectly / confusingly called CTLog: https://github.com/sigstore/policy-controller/blob/main/pkg/apis/policy/v1alpha1/clusterimagepolicy_types.go#L113
The internal field name is CTLog, and the json field is ctlog, and it really should be called TLog. This is confusing because there is a CTLog (that Fulcio points to and writes to).
We should make this a change in the next API rev, including the proper conversions, etc.
Version v1alpha1, v1beta1
Indeed this creates confusion when looking at the SigstoreKeys fields in comparison with the names for the ClusterImagePolicy spec.