Issue #1926420 by arthurf: starts the process of moving modules that do not require additional executables to the api

Issue #1928786 by iva2k, arthurf: adds a new reset to source option with tests, abstracts the tests to make it easier to test functionality'

Issue #1920280 by iva2k, arthurf: fixes namespace collision with core's file_load, handles file caching issue

Updates to use the core archiver functions. Unfortunately had to write new classes so that files can be stored in archives without full system paths.