feat: add export_to functions

[RobPasMue]

Description

Adding export_to_* functions to simplify the process for end users.

Issue linked

Closes #1130

Checklist

• I have tested my changes locally.
• I have added necessary documentation or updated existing documentation.
• I have followed the coding style guidelines of this project.
• I have added appropriate unit tests.
• I have reviewed my changes before submitting this pull request.
• I have linked the issue or issues that are solved to the PR if any.
• I have assigned this PR to myself.
• I have added the minimum version decorator to any new backend method implemented.
• I have made sure that the title of my PR follows Conventional commits style (e.g. feat: extrude circle to cylinder)

[AlejandroFernandezLuces]

LGTM, some minor comments.

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 97.22222% with 1 lines in your changes are missing coverage. Please review.

Project coverage is 90.75%. Comparing base (9757402) to head (fd77ffe).

Files	Patch %	Lines
src/ansys/geometry/core/designer/design.py	97.22%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1147      +/-   ##
==========================================
+ Coverage   90.72%   90.75%   +0.02%     
==========================================
  Files          93       93              
  Lines        6933     6964      +31     
==========================================
+ Hits         6290     6320      +30     
- Misses        643      644       +1     

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