TF-1810 Move all hive clients to a separate folder

(cherry picked from commit c72e16b576835b7748e20ab3e5cce5e1f505a65f)

lib/features/caching/clients/cache_version_client.dart

@@ -0,0 +1,9 @@
+
+abstract class CacheVersionClient {
+
+  String get versionKey;
+
+  Future<bool> storeVersion(int newVersion);
+
+  Future<int?> getLatestVersion();
+}