DD4Hep implementation of FT

Louis Henryrequested to merge
lohenry-ftDet into master

Allows the use of DD4HEP for FT.

Related to Phys!1003 (merged), Allen!698 (merged), Boole!364 (merged), LHCb!3264 (merged) and Detector!102 (merged)

Edited by Louis Henry

Merge request reports