- Add Abstract class DetectorDescriptor, which is derived from DataDescriptor (Support ray generation from a given pose and detector pixel and given pose and voxel)
- Add first derived class of DetectorDescriptor: PlanarDetectorDescriptor
- Add usage of DetectorDescriptor in Projectors (remove dependency to geometry, ray generation is only handled by DetectorDescriptor, adapt tests)
- Restructure tests of CUDA projectors to make failing tests more readable

- Move geometry to core module
- Use strong types for Geometry (Old constructors are kept for now, but are just wrappers, most of them use constexpr)
- Added some convience overloads for RotationAngles3D and GeometryData
- Fixed tests for removing old constructors (CircluarTrajectoryGenerator, Projectors)

- Static analysis, compile, build and running tests will always be performed
- Dynamic analysis (memory sanitizers and such) are run for merge requests and schedules
- Docs are only run for schedules

- add pure virtual destructor to DataDescriptor
- create VolumeDescriptor which takes over most functionality from DataDescriptor
- move static function bestCommon(...) to a free function in DescriptorUtils.h/cpp
- fix other classes and tests to return and handle VolumeDescriptors instead of DataDescriptors

Add helper to print type in tests; Remove duplicate function of random generation of eigen vectors; Add test, which should fail sanitizer

For performance reasons this was removed, includes:
- removing functionality from DataHandlerCPU
- added simple benchmark
- adapting clang-tidy to not show warnings from catch2 testing

Build image hierarchy. Using install scripts in the scripts/ folder, buildDockerContainers.sh also runs tests on the containers.
Added an image for static analysis and documentation builds. Added hidden builds in .gitlab-ci.yml for local testing, which build and run tests.

Revert "Removed aliases of Eigen::VectorX, also in tests (as it will not work with older Eigen versions)."

This reverts commit 81572177