With two exceptions:
* ges_clip_create_track_elements_func
* ges_uri_clip_set_uri
which were never declared in headers and should always have been static.
Allowing application to force the asset system to recheck if an
asset has been "fixed" and can be used again
API:
+ ges_asset_needs_reload
Differential Revision: https://phabricator.freedesktop.org/D584
+ Generate the documentation
Note: Do not compile (add to Makefile.am) for now as we are missing pieces at that point
Co-Authored-By: Thibault Saunier <thibault.saunier@collabora.com>