Adds a helper class to make CachedDataProbablyExists, GetCachedData and PutCachedData operations. The helper checks the availble connections in the pool and decides if the thread should make a regular request or batch together with other requests. This will reduce the number of concurrent connections on each client.
Disabled by default.
#rb devin.doucette
[CL 15604924 by Johan Berg in ue5-main branch]
The async put backend now uses this new status to avoid calling CachedDataProbablyExists after every put, which has a high cost for certain backends.
#rb Zousar.Shaker
#fyi Joakim.Lindqvist, Stefan.Boberg
[CL 15000972 by Devin Doucette in ue5-main branch]
