In this PR we introduce cluster settings to manage the global data stream retention.
We introduce two settings `data_streams.lifecycle.retention.max` & `data_streams.lifecycle.retention.default` that configure the respective retentions. The settings are loaded and monitored by the `DataStreamGlobalRetentionSettings`. The validation has also moved there.
We preserved the `DataStreamGlobalRetention` record to reduce the impact of this change. The purpose of this method is to be simply a wrapper record that groups the retention settings together.
Temporarily, the `DataStreamGlobalRetentionSettings` is using the DataStreamFactoryRetention which is marked as deprecated for migration purposes.
This makes the data stream lifecycle generally available. This will allow
data streams to take advantage of a native simplified and resilient
lifecycle implementation.
