feat: generate markdown

[njzjz]

Signed-off-by: Jinzhe Zeng jinzhe.zeng@ustc.edu.cn

[codecov]

Codecov Report

❌ Patch coverage is 84.00000% with 4 lines in your changes missing coverage. Please review.
✅ Project coverage is 92.10%. Comparing base (19c6863) to head (333c4c6).
⚠️ Report is 3 commits behind head on master.

Files with missing lines	Patch %	Lines
wenxian/__main__.py	72.72%	3 Missing ⚠️
wenxian/reference.py	92.85%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master      #63      +/-   ##
==========================================
+ Coverage   91.96%   92.10%   +0.13%     
==========================================
  Files          13       13              
  Lines         498      519      +21     
==========================================
+ Hits          458      478      +20     
- Misses         40       41       +1     

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[Copilot]

Pull Request Overview

This PR adds markdown generation capability to the wenxian reference management tool. The implementation provides a new markdown output format as an alternative to the existing BibTeX format.

• Adds a markdown property to the Reference class that formats citations in markdown with DOI links and citation badges
• Implements command-line support for markdown output via a new --output_type parameter
• Updates file extension handling to automatically generate .md files for markdown output

Reviewed Changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated 4 comments.

File	Description
wenxian/reference.py	Adds markdown property that formats reference data as markdown with italicized journal names, DOI links, and citation badges
wenxian/main.py	Adds output_type parameter and command-line argument to support markdown generation alongside existing BibTeX functionality