[build] Setup Oxygen target platform and discovery catalog

Adapt the modeling plugin code to load the catalog from an "oxygen"
folder.

Change-Id: If0e8d6bda5e4ece919c6f3ae883c066d26370e18
3 files changed
tree: bb456a9a850c3d8a2403db10771d3b9316c43e65
  1. features/
  2. plugins/
  3. releng/
  4. tests/
  5. .gitignore