frontend-grpc: change generated package names
Summary
Update frontend ptotobuf definition to use 'ch.cern' and 'cta::frontend' for generated jaba and c++ packages.
Update frontend ptotobuf definition for FileInfo
to propagate files uid
, gid
and path
to make protocol
more generic.
References
fixes: #1251 (closed) and partially #1240 (moved)
Edited by Tigran Mkrtchyan