Update CPACS Schema to 3.3

[joergbrech]

Description

Fixes #883.

This PR updates the CPACS schema file to 3.3.

Apart from some syntactic changes (e.g. renamed xml nodes for kinks) and some small bug fixes the following changes need to be taken into account for TiGL:

• https://github.com/DLR-SL/CPACS/issues/680

  This is a bigger task and will be done in a separate issue: #915

• https://github.com/DLR-SL/CPACS/issues/632

  This is a bigger task and will be done in a separate issue: #908

• https://github.com/DLR-SL/CPACS/issues/624

  This is a bigger task and will be done in a separate issue: #909

How Has This Been Tested?

Existing unit tests and integration tests succeed, added a new unit test for the stringerFramePosition. CHecked the tiglviewer report.

Screenshots, that help to understand the changes(if applicable):

Checklist:

• [ ] A test for the new functionality was added.
• [x] All tests run without failure.
• [x] The new code complies with the TiGL style guide.
• [x] New classes have been added to the Python interface.
• [ ] API changes were documented properly in tigl.h.

[codecov-commenter]

Codecov Report

Merging #907 (0798911) into master (6b764bd) will increase coverage by 0.21%. The diff coverage is 48.78%.

@@            Coverage Diff             @@
##           master     #907      +/-   ##
==========================================
+ Coverage   69.56%   69.78%   +0.21%     
==========================================
  Files         298      298              
  Lines       24947    25003      +56     
==========================================
+ Hits        17355    17448      +93     
+ Misses       7592     7555      -37     

Impacted Files	Coverage Δ
src/CCPACSEtaIsoLine.cpp	59.45% <0.00%> (-5.25%)	:arrow_down:
src/CCPACSStringVector.cpp	86.53% <0.00%> (-5.30%)	:arrow_down:
src/CCPACSXsiIsoLine.cpp	15.78% <0.00%> (-2.97%)	:arrow_down:
src/cpacs_other/CCPACSMaterialDefinition.cpp	54.54% <ø> (-4.72%)	:arrow_down:
src/fuselage/CCPACSFuselageProfile.cpp	81.10% <0.00%> (ø)
src/CCPACSCurveParamPointMap.cpp	54.28% <33.33%> (ø)
...c/fuselage/CCPACSFuselageStringerFramePosition.cpp	16.66% <46.34%> (+12.60%)	:arrow_up:
src/CCPACSPointAbsRel.cpp	70.31% <62.50%> (-2.42%)	:arrow_down:
src/CCPACSPoint.cpp	62.90% <80.00%> (+1.49%)	:arrow_up:
src/CCPACSCurvePointListXYZ.cpp	86.66% <100.00%> (ø)
... and 15 more

[joergbrech]

As discussed today with @sdeinert the implementation of the stringerFramePosition must be reworked, so I re-labeled this PR as draft.

[joergbrech]

@AntonReiswich, this PR is - again - ready for review.

[AntonReiswich]

@joergbrech Great, thanks!