ATOM-15465: Fix issue with incorrect rotation on models.
* Revert "{LYN-3229} Update AssImp package with latest AssImp 3rd party source changes (#545)"
This reverts commit 06d2050ac4fe6b9d0d0c52e759cf73a9a3f7d3eb.
* bumping version to force assets to reprocess
* renaming and organizing files
* removed unused files
* Removing unnecessary file
* moved file
* reverting movement of 3rdparty associations from gems to global
* removing unnecessary calls to ly_add_external_target_path
* fixing install prefix of ci_build
* Fixes to get 3rdparties declared in gems to be installed
* Allowing to install just one configuration
* Adding empty line at the end
* removing commented code
* setting IMPORETD_LOCATION_<CONFIG> and defaulting IMPORTED_LOCATION to the profile config in case other configs are not installed
LYN-2645} Helios - AssImp asserts on Linux processing
* Linux builds have asserts off, to match Windows and Mac.
* Secondary UV channels support names are available now
Jira: https://jira.agscollab.com/browse/LYN-2645