[RULE] Zone redundancy check for Cache for Redis

### Existing rule

_No response_

### Suggested rule

Currently there's no rule to check for Cache for Redis Availability Zone protection. It would be good to align the rules with all other reliability checks done by PSRule already for Availability Zone protection.

### Pillar

None

### Additional context

This will help improve checking for deployed resources using the steps in this link: https://azure.github.io/PSRule.Rules.Azure/export-rule-data/
https://learn.microsoft.com/en-us/azure/azure-cache-for-redis/cache-how-to-zone-redundancy