Draft: Add UploadAssets to GitLab client
Adds godirwalk to read files passes to UploadAssets.
Moves client errors structs to errors.go.
First part of #59 (closed)
Edited by Jaime Martinez
Adds godirwalk to read files passes to UploadAssets.
Moves client errors structs to errors.go.
First part of #59 (closed)