Add jieba-macros for HMM data generation and remove build.rs file

[sepcnt]

Introduce a new jieba-macros package to handle HMM data generation, eliminating the need for file operations in build.rs.

(This would work better with some downstream crates: surrealdb/surrealdb#4556 (comment))

Update dependencies and integrate the macro into the existing codebase.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 84.79%. Comparing base (7f3b273) to head (9274651).
Report is 1 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #117      +/-   ##
==========================================
+ Coverage   84.62%   84.79%   +0.16%     
==========================================
  Files           8        9       +1     
  Lines        2036     2045       +9     
==========================================
+ Hits         1723     1734      +11     
+ Misses        313      311       -2     

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[codspeed-hq]

CodSpeed Performance Report

Merging #117 will not alter performance

_{Comparing sepcnt:main (9274651) with main (7f3b273)}

Summary

✅ 10 untouched benchmarks

[messense]

Thanks!