GNN track-tracksters linking

[Moanwar]

These GNN models are trained to evaluate whether a given trackster should be linked to a track. Two models are provided to cover different track propagation scenarios within the HGCAL:

• First-disk track propagation: FirstDiskPropGNN_v0.onnx

• Interface-disk track propagation: InterfaceDiskPropGNN_v0.onnx

A full inference plugin integrating these models into TICL will be added in a subsequent update.

[cmsbuild]

A new Pull Request was created by @Moanwar for branch master.

@Moanwar, @akritkbehera, @cmsbuild, @iarspider, @jfernan2, @mandrenguyen, @raoatifshad, @smuzaffar, @srimanob can you please review it and eventually sign? Thanks.
@ftenchini, @mandrenguyen, @sextonkennedy you are the release manager for this.
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[cmsbuild]

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[cmsbuild]

REMINDER @mandrenguyen, @ftenchini, @sextonkennedy: This PR was tested with cms-sw/cmssw#49652, please check if they should be merged together

[mandrenguyen]

+1

[mandrenguyen]

merge