Resolve "Distance setting of parabolic mirror is not intuitive"

Closes #371

See merge request !229

* Added parabolic mirror tests

* added anchor point isometry to surface for parabola and added effective_surface_isometry method

* refactor name of method

* cargo fmt

* added tests for parabolic mirror

* cargo xtask ci

* absolute value for angle check

* extra cehck for off-axis angle

* oaps are now defined via their effective off-axis focal length and the off axis angle

* changed input of parabolic mirror to use the effective focal length

Tests and docs

See merge request !228

* cargo xtask ci

* Remove GeometricSurface enum by using dyn reference

* absolute value for angle check

* extra cehck for off-axis angle

* oaps are now defined via their effective off-axis focal length and the off axis angle

* changed input of parabolic mirror to use the effective focal length

Various refactoring, testing an documenation updates

See merge request !227

Fix many doc warnings

Simplifies cloning.

feat:  Extend automatic scaling of fluence KDE plot by 3 kernel sigmas

Closes #369

See merge request !226

Add Kernel density estimator for fluence map calculation

Closes #333 and #370

See merge request !225

* Make unit test pass again

* Code cleanup

* feat:  Add fluence plot to each critical fluence in ghost focus analysis report.

Closes #370

* Various linting.

* Fix KDE to correctly use UOM. Fix calculation of peak fluence.

* First integration of fluence maps using KDE in ghost focus report. (not yet really usable).

* Add HitMap -> FluenceData fn using KDE.

* refactor:  FluenceData replace axis vectors by ranges. Calculate peak fluence internally.

* refactor:  Move FluenceDetector to its own folder and separate FluenceData.

* Fixed Silverman's rule by using std_dev instead of variance

* feat:  Implement Kernel density estimator (KDE) with bandwidth estimate (Silverman's rule of thumb)

* Implement some very basic KDE and an example.

* Add basic module Kde.

Attacks #333

Resolve "Convention for sign of radius of curvature"

Closes #309

See merge request !224

* changed parabola focal length convention to positive values for "normal" focusing

Merge branch '338-number-of-refractions-counter-increases-also-for-non-interacting-nodes' into 'main'

fix:  Refraction counter now only increases for non-passive surfaces

Closes #338

See merge request !223

addded "previous_direction" field in ray to remove the necessity of keeping...

Closes #342

See merge request !222

* fix:  Position history of rays is now deleted for unintended refraction/reflection. Allows for ghost focus analysis with mirrors

* implemented ghost focus analysis for thin mirrors

* addded "previous_direction" field in ray to remove the necessity of keeping all the position history, especially during ghost focus analysis

Merge branch '316-add-tests-for-paraxial_surface-with-positioning-at-other-positions-and-orientations-than-the-z' into 'main'

Resolve "Add tests for paraxial_surface with positioning at other positions and orientations than the z-axis"

Closes #316

See merge request !221

* test:  Added test for rotated and shifted paraxial lens

fix: inverse group dot diagram now corrected

Closes #346

See merge request !220

fix:  Auto Axisqual function now only runs if discrepancy between axis is...

Closes #330

See merge request !219

* fix:  Auto Axisqual function now only runs if discrepancy between axis is not too high to avoid "zoom-out effect"

refactor:  uuid now only stored in node attributes

Closes #345

See merge request !218

feat:  Display distance between nodes in dot diagram

Closes #300

See merge request !217

Resolve "Fix triangulate or find alternative"

Closes #352

See merge request !216

* triangulate polygon aperture on creation not on every apodize call

* use earcutr instead of triangulation crate

simplified "enter_through_surface" and "exit_through_surface" to single...

See merge request !215

* refactor:  New struct OpticSurface replaces OpticPort and is stored in OpticPorts of Nodeattributes, simplifying accessing surface attributes

* fixed calc_up_direction again...

* fixed surface setting in cylindrical lens from spherical to cylindrical

* fixed up-direction bug for infinitesimal diretion change. alsorefactoring of set_surface_iso_and_coating

* rename of ports consistently to "input_1" and "output_1"

* cargo xtask ci fixes

* refactor of parabolic surface for opticsurface

* fixed failed tests

* further refactoring

* further refactoring

* further refactoring

* refactor of wedge, cylindrical lens, node group and detector node. still further refactoring necessary

* simplified "enter_through_surface" and "exit_through_surface" to single function "pass_through_surface"

* simplified exit_through_surface_lens function

* geometric surface for lens now completely defined in opm file. no need for update_surface anymore

* relocate max fluence location in calc_fluence to update correctly

* example file

* introduction of optic_surface for lens

refactor:  Delete no longer needed Detector node and adapt examples.

Closes #357

See merge request !214