update of TRK and FT3 services, to better match with Corrado's scheme

[altsybee]

Update on TRK services for the peacock layout, to better correspond to the engineering drawings:

• place "tubes" for OT barrel services outside the ML "service tubes"
• adjust radii and z positions for service disks and tubes
• carbon support for ML barrel: radius is increased, z is extended to cover also the ML disks
• add colors for services according to engineering drawings by Corrado

FT3 disks with staves:

• reduce rMin and rMax of the TGeoTube "air envelopes", to avoid overlaps with other volumes
• forbid crossing the rMax by ML and OT disks: cutStavesOnNominalRadius_outer set to true: this reduces the sensitive area of ML disks, but allows to avoid overlaps with surrounding services:
  Was:

Now (with `cutStavesOnNominalRadius_outer` set to `true`):

We will need to see how to increase the sensitive area of the ML disks (namely, to which extend we can violate the 35 cm constraint on disk rMax, without colliding with ML services).

Geometry was checked with the following command:

 o2-sim-serial-run5 -n 1 -g pythia8hi -m A3IP TRK FT3 TF3 --configKeyValues "TRKBase.layoutVD=kIRIS4;TRKBase.layoutMLOT=kSegmented;FT3Base.layoutFT3=kSegmentedStave;
IOTOFBase.segmentedInnerTOF=true;IOTOFBase.segmentedOuterTOF=true"

Remaining overlaps:

=== Overlaps for ccdb_object ===
 = Overlap ov00000: ITOFLayer extruded by: ITOFLayer/ITOFStave_1 ovlp=0.0613863
 = Overlap ov00001: ITOFLayer extruded by: ITOFLayer/ITOFStave_3 ovlp=0.0611648
 = Overlap ov00002: ITOFLayer extruded by: ITOFLayer/ITOFStave_4 ovlp=0.0575908
 = Overlap ov00003: ITOFLayer extruded by: ITOFLayer/ITOFStave_2 ovlp=0.0528259
 = Overlap ov00004: ITOFLayer extruded by: ITOFLayer/ITOFStave_5 ovlp=0.042106
 = Overlap ov00005: ITOFLayer extruded by: ITOFLayer/ITOFStave_6 ovlp=0.0147191