feat: Add method IsBlock::id()

[scouten]

No description provided.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 12.18%. Comparing base (9180f7e) to head (29e6f1b).
Report is 1 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #184      +/-   ##
==========================================
+ Coverage   11.99%   12.18%   +0.18%     
==========================================
  Files         227      227              
  Lines       16475    16450      -25     
==========================================
+ Hits         1976     2004      +28     
+ Misses      14499    14446      -53     

Components	Coverage Δ
Parser test coverage	100.00% <100.00%> (ø)
AsciiDoc spec coverage	2.46% <ø> (+0.17%)	⬆️

[codspeed-hq]

CodSpeed Performance Report

Merging #184 will not alter performance

_{Comparing is_block+id (29e6f1b) with main (9180f7e)}

Summary

✅ 4 untouched benchmarks