caching
fun <Key, Value> WriteKeyValueRepo<Key, Value>.caching(kvCache: KeyValueRepo<Key, Value>, scope: CoroutineScope = CoroutineScope(Dispatchers.Default)): FullWriteKeyValueCacheRepo<Key, Value>
fun <Key, Value> WriteKeyValuesRepo<Key, Value>.caching(kvCache: KeyValueRepo<Key, List<Value>>, scope: CoroutineScope = CoroutineScope(Dispatchers.Default), locker: SmartRWLocker = SmartRWLocker()): FullWriteKeyValuesCacheRepo<Key, Value>