feat: add quadratic face rendering

[waltersma]

Description

Rendering fixes #106 for quadratic faces and non planar polgons.

Original:

Fix:

[Copilot]

Pull request overview

This PR adds improved rendering capabilities for non-planar polygon faces, particularly targeting quadratic elements with curved edges. The implementation subdivides faces through triangulation while preserving original mesh edges to prevent faceted appearance.

Changes:

• Added improved_surface_rendering parameter to control rendering mode for non-planar surfaces
• Implemented surface triangulation with original edge preservation in mesh processing
• Updated rendering logic to display subdivided surfaces with separate edge rendering

Reviewed changes

Copilot reviewed 3 out of 3 changed files in this pull request and generated 4 comments.

File	Description
src/ansys/meshing/prime/graphics/plotter.py	Added improved_surface_rendering parameter and conditional rendering logic for subdivided faces with edge preservation
src/ansys/meshing/prime/core/mesh.py	Implemented triangulation of polygon surfaces while storing original edges for accurate rendering
doc/changelog.d/1220.miscellaneous.md	Added changelog entry for the new feature

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[Copilot]

Pull request overview

Copilot reviewed 3 out of 3 changed files in this pull request and generated 2 comments.

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[Copilot]

Pull request overview

Copilot reviewed 3 out of 3 changed files in this pull request and generated 3 comments.

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[AlejandroFernandezLuces]

LGTM, just a question about the design.