ITS: add 11-layer GPU tracking support

[mpuccio]

No description provided.

[alibuild]

Error while checking build/O2/fullCI_slc9 for a792372 at 2026-05-06 17:38:

## sw/BUILD/ThePEG-latest/log
collect2: error: ld returned 1 exit status
## sw/BUILD/O2-latest/log
/sw/SOURCES/O2/slc9_x86-64-slc9_x86-64/0/Detectors/ITSMFT/ITS/tracking/GPU/ITStrackingGPU/TimeFrameGPU.h:107:23: error: virtual function 'const char* o2::its::gpu::TimeFrameGPU<<anonymous> >::getName() const [with int NLayers = 7]' overriding final function
/sw/SOURCES/O2/slc9_x86-64-slc9_x86-64/0/Detectors/ITSMFT/ITS/tracking/GPU/ITStrackingGPU/TimeFrameGPU.h:107:23: error: virtual function 'const char* o2::its::gpu::TimeFrameGPU<<anonymous> >::getName() const [with int NLayers = 11]' overriding final function
/sw/SOURCES/O2/slc9_x86-64-slc9_x86-64/0/Detectors/ITSMFT/ITS/tracking/GPU/ITStrackingGPU/TimeFrameGPU.h(107): error: cannot override "final" function "o2::its::TimeFrame<NLayers>::getName [with NLayers=7]" (declared at line 284 of /sw/SOURCES/O2/slc9_x86-64-slc9_x86-64/0/Detectors/ITSMFT/ITS/tracking/include/ITStracking/TimeFrame.h)
/sw/SOURCES/O2/slc9_x86-64-slc9_x86-64/0/Detectors/ITSMFT/ITS/tracking/GPU/ITStrackingGPU/TimeFrameGPU.h(107): error: cannot override "final" function "o2::its::TimeFrame<NLayers>::getName [with NLayers=11]" (declared at line 284 of /sw/SOURCES/O2/slc9_x86-64-slc9_x86-64/0/Detectors/ITSMFT/ITS/tracking/include/ITStracking/TimeFrame.h)
ninja: build stopped: subcommand failed.

Full log here.

[mpuccio]

Hi @fprino@shahor02 , I think this can be merged if it is fine with you