Fix saving only people list in .pet and add unit test for the bug

Signed-off-by: schroedtert <t.schroedter@fz-juelich.de>

This means PeTrack now requires C3D-files with joint positions added in. This results in a more accurate representation of the skeleton.

Signed-off-by: schroedtert <t.schroedter@fz-juelich.de>

- Stop Tracker inheriting from QVector, instead save TrackPerson in std::vector
- Save TrackPerson's in another class (new class PersonStorage)
- Move all functions directly accessing the trajectories in a writing/editing manner into this class
- Some small refactorings and documentation-comments

Signed-off-by: schroedtert <t.schroedter@fz-juelich.de>

Signed-off-by: schroedtert <t.schroedter@fz-juelich.de>

fix: Doesn't add the time offset given by the firstFrame parameter each time the project is read but only once. 

Enlarge CropRect to enable detection of code marker near edge of multicolormarker

- Add clang-format file
- Add scripts and format check for CI
    - script for checking the format (bash)
    - script for formatting the code (bash)
- Add format checking to CI
- Reformat project with clang-format

- Restrict access to parameters and force usage of setters and getters to ensure signals are being sent, when a parameter changes
- Some small changes for testability
- Some small fixes for bugs discovered during testing

Signed-off-by: schroedtert <t.schroedter@fz-juelich.de>

- changed dialogue "Open MoCap" to "Manage MoCap"
- enable loading multiple MoCap-Files (or same with different offset)
- enable unloading MoCap-Files
- save all files in pet and load when opening project

- Create CodeMarkerOptions-Class
- Use CodeMarkerOptions-Class in findCodeMarker
- Use CodeMarkerOptions-Class in CodeMarkerWidget

- use ui file as base for the dialog
- use .zenodo.json for the list of authors
- add function to read authors from file
- copy authors list to binary path

Signed-off-by: schroedtert <t.schroedter@fz-juelich.de>

- re-tracking now only replaces a point, if the whole path taken during retracking was better than the point to replace

- informs user of unit (cm, not m), if a low value (<100cm) is put in

- Loading a C3D-File from XSens into an internal tree structure
- Transforming the internal skeleton into lines and arrows to be drawn
- Actual drawing
- Settings for the visualisation (turning it on/off, changing thickness or color)
- Saving the path to the C3D and other metadata in the project file
- Loading the data from the project file

- resolve existing and new warnings on MSVC

Set marker color according to color used in threshold i.e. selected color when using MulticolorMarker

- Thus: Made (new function) findColorBlob independent of the GUI (mostly) to enable reuse
- added namespaces for reco (reco and reco::detail)

Fixing the occurring infinite loop, by using `cv::transform` instead of pointer arithmetic when using the blackdot marker.

Signed-off-by: schroedtert <t.schroedter@fz-juelich.de>