- frame-wise navigation when paused
- display frame number
- display diff and quality of displayed trajectories

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

This commit adds a script, which displays trajectories from test and truth cases at the same time in different colours to be compared to each other. This streamlines the process of checking changed regression test results.

- 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