REFACTOR: 6530 migrate import nastran extension

[eblanco-ansys]

Description

Migrate import nastran extension

Issue linked

#6530

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 tests (unit, integration, system).
• I have reviewed my changes before submitting this pull request.
• I have linked the issue or issues that are solved by the PR if any.
• I have agreed with the Contributor License Agreement (CLA).

[codecov]

Codecov Report

❌ Patch coverage is 91.56627% with 7 lines in your changes missing coverage. Please review.
✅ Project coverage is 81.90%. Comparing base (fea45cf) to head (e7a2871).
⚠️ Report is 1 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #6537      +/-   ##
==========================================
- Coverage   81.93%   81.90%   -0.04%     
==========================================
  Files         236      236              
  Lines       75770    75757      -13     
==========================================
- Hits        62083    62045      -38     
- Misses      13687    13712      +25     

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