Fast and Convenient API for Querying an Object by ID

[mpluecker]

Since one of the most common operations is to load an object by its id, we need a fast and convenient API to do this. This could be something like <T> T queryObjectById(Class<T> clazz, String id). Also a bulk operation would be nice: <T> List<T> queryObjectsById(Class<T> clazz, List<String> ids)

[remi128]

use QueryHelper.findRecordById, which will be later mapped to the suitable extension