Replace commonmark with jbmd

[ice1000]

Fix #1215

[codecov]

Codecov Report

Attention: Patch coverage is 86.60714% with 15 lines in your changes missing coverage. Please review.

Project coverage is 82.30%. Comparing base (ede5621) to head (7ace93a).
Report is 15 commits behind head on main.

Files with missing lines	Patch %	Lines
...ava/org/aya/syntax/literate/AyaBacktickParser.java	80.00%	3 Missing and 10 partials ⚠️
...rc/main/java/org/aya/cli/literate/AyaMdParser.java	94.28%	0 Missing and 2 partials ⚠️

Additional details and impacted files

@@             Coverage Diff              @@
##               main    #1216      +/-   ##
============================================
+ Coverage     82.23%   82.30%   +0.06%     
+ Complexity     3720     3718       -2     
============================================
  Files           331      332       +1     
  Lines         10994    11017      +23     
  Branches       1284     1288       +4     
============================================
+ Hits           9041     9067      +26     
+ Misses         1270     1264       -6     
- Partials        683      686       +3     

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