Add missing keys that should be cleared when running `horizon:clear-metrics`

[atendwa]

This update enhances the clear() method to include additional Redis keys, ensuring that the horizon:clear-metrics command comprehensively removes all relevant metrics stored in the cache.

Dashboard State Comparison

• Before Executing horizon:clear-metrics:

• After Executing horizon:clear-metrics (Current Version):

• After Updating the clear() Method:

Note on Job Hashes in Cache

Currently, job hashes remain in the cache, as illustrated below. Ideally, these should also be cleared. However, removing them without flushing the entire Redis queue connection or using wildcard patterns ('*') is not feasible unless the specific keys to target are known.

A potential improvement would be to store job hashes under a specific key, such as jobs, to facilitate direct targeting.

[taylorotwell]

I don't think these keys are meant to be cleared by this command. Metrics is separate from the dashboard.

[atendwa]

Is there a command that will achieve this use case?