feat: adding portal, detector volume & detector

[asalzburger]

This PR adds the new Portal, DetectorVolume and Detector geometry which is meant to eventually replace the Layer, TrackingVolume, TrackingGeometry infrastructure.

The new classes are currently put under the Experimental namespace.

Only the new classes, the necessary definitions and unit tests are added with this PR, which will be followed up by the visualisation, the detector building and the navigation code.

A description of the concepts and classes is added to the
docs/experimental_geometry.md to this PR.

[codecov]

Codecov Report

Merging #1645 (ed0b274) into main (4e2c890) will increase coverage by 0.39%.
The diff coverage is 66.66%.

@@            Coverage Diff             @@
##             main    #1645      +/-   ##
==========================================
+ Coverage   48.58%   48.98%   +0.39%     
==========================================
  Files         382      397      +15     
  Lines       21061    21497     +436     
  Branches     9645     9801     +156     
==========================================
+ Hits        10233    10530     +297     
- Misses       4147     4171      +24     
- Partials     6681     6796     +115     

Impacted Files	Coverage Δ
Core/include/Acts/Geometry/VolumeBounds.hpp	40.00% <ø> (ø)
Core/src/Geometry/DetectorVolume.cpp	47.25% <47.25%> (ø)
Core/src/Geometry/Detector.cpp	47.61% <47.61%> (ø)
.../include/Acts/Geometry/detail/PortalGenerators.hpp	55.00% <55.00%> (ø)
Core/include/Acts/Geometry/detail/PortalHelper.hpp	66.66% <66.66%> (ø)
Core/include/Acts/Utilities/Helpers.hpp	68.60% <66.66%> (-0.08%)	⬇️
...Acts/Geometry/detail/SurfaceCandidatesUpdators.hpp	70.73% <70.73%> (ø)
...e/Acts/Geometry/detail/NavigationStateUpdators.hpp	72.41% <72.41%> (ø)
...de/Acts/Geometry/detail/DetectorVolumeUpdators.hpp	73.07% <73.07%> (ø)
Core/src/Geometry/Portal.cpp	73.46% <73.46%> (ø)
... and 12 more

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[github-actions]

📊 Physics performance monitoring for ed0b274

🟥 ERROR The result has missing elements!
This is likely a physmon job failure

Full report
CKF: seeded, truth smeared, truth estimated, orthogonal
IVF: seeded, truth smeared, truth estimated, orthogonal
Ambiguity resolution: seeded, , ❌ orthogonal
Truth tracking
Truth tracking (GSF)

Vertexing

Vertexing vs. mu

IVF seeded

IVF truth_smeared

IVF truth_estimated

IVF orthogonal

Seeding ❌

Seeding seeded

❌ Seeding truth_smeared

Seeding truth_estimated

Seeding orthogonal

CKF

CKF seeded

CKF truth_smeared

CKF truth_estimated

CKF orthogonal

Ambiguity resolution

seeded

Truth tracking (Kalman Filter)

Truth tracking

Truth tracking (GSF)

Truth tracking

[andiwand]

took a first look but left out the test code for now

[paulgessinger]

This is how far I got so far. Commenting this first batch now, but might have more later.

[andiwand]

I can't really provide any more feedback right now. for me it would be good to bring it in and then test it with some real examples

[asalzburger]

There's one discussion point open, i.e. whether we should give the access to the const object to the iterators.
My suggestion is:

• we bring it in like this, and I try in a separate PR how an iterator access would look like and if it's feasible.

[asalzburger]

I've updated this to the new OwningDelegate infrastructure, it made the things quite easier, in fact.

[asalzburger]

The debug unit test seems to fail, checking it now.

[asalzburger]

Hey @andiwand - I think now all the clang-tidy fixes are also through, and the PR is reworked after @paulgessinger 's introduction of the OwningDelegate.

There will be some ironing out of a few things certainly along the way, but since this is under Experimental namespace, I hope we can move that in, in order not to block other development.

[asalzburger]

@andiwand - if you're happy, please re-approve

[asalzburger]

Since @andiwand approved and gave a thumbs up, I will merge that in.