[libincfs] New driver: complete implementation + ported tests

Bug: 146080380
Test: atest system/incremental_delivery/incfs

Change-Id: Iea89c059b7ec34cd33806997eae3bdc3bace4200
17 files changed
tree: 2079b4a747d10595785409ca5683f9e0ad4d6404
  1. incfs/
  2. libdataloader/
  3. .clang-format
  4. PREUPLOAD.cfg