1284 implement rounded wing segments

[merakulix]

This PR provides a new lofting algorithm that enables TiGL to build shapes with rounded segments from given profile curves and rounding distances.

Description

A new class was added implementing the new lofting algorithm:

CTiglRoundedSegmentSurface,

Within given (rounding) distances to each side of a profile curve, the curve will be rounded within this distance, otherwise it will be linear.

The xsd-Schema was updated, to implement the new functionality for CPACS.
The customized CPACS classes were updated to call the new lofting algortihm.

Implements #1284

How Has This Been Tested?

Added unit test file and new testdata.
Tested visually, see below:

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

Wing is rounded around the middle section, using the new lofting algorithm:

Wing not rounded, using the usual algorithm

Checklist:

Task	Finished	Reviewer Approved
At least one test for the new functionality was added.	yes does not apply	OK
New classes have been added to the Python interface.	yes does not apply	OK
The code is properly documented with doxygen docstrings	yes does not apply	OK
Changes are documented at the top of ChangeLog.md	yes does not apply	OK

[github-actions]

PR Reminders

This PR has changes in src/, tests/unittests/, and bindings/python_internal/ but not in TIGLCreator/, tests/integrationtests/, or tests/python/. ChangeLog.md has changes.

• ✅ Tests added or not required
• ✅ Python bindings modified
• ✅ ChangeLog.md updated

---

This is an automated reminder from CI

[codecov]

Codecov Report

❌ Patch coverage is 96.71053% with 5 lines in your changes missing coverage. Please review.
✅ Project coverage is 73.33%. Comparing base (d205ea1) to head (9d7ea76).

Files with missing lines	Patch %	Lines
src/geometry/CTiglMakeLoft.cpp	91.89%	3 Missing ⚠️
src/geometry/CTiglRoundedSegmentSurface.cpp	96.15%	2 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1338      +/-   ##
==========================================
+ Coverage   73.20%   73.33%   +0.12%     
==========================================
  Files         324      326       +2     
  Lines       28604    28756     +152     
==========================================
+ Hits        20939    21087     +148     
- Misses       7665     7669       +4     

Flag	Coverage Δ
unittests	73.33% <96.71%> (+0.12%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

Files with missing lines	Coverage Δ
src/geometry/CTiglRoundedSegmentSurface.h	100.00% <100.00%> (ø)
src/wing/CTiglWingBuilder.cpp	90.24% <100.00%> (+1.83%)	⬆️
src/geometry/CTiglRoundedSegmentSurface.cpp	96.15% <96.15%> (ø)
src/geometry/CTiglMakeLoft.cpp	80.21% <91.89%> (+2.88%)	⬆️

... and 1 file with indirect coverage changes

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.
• 📦 JS Bundle Analysis: Save yourself from yourself by tracking and limiting bundle sizes in JS merges.