Add support for sax xml parser

[timokoessler]

https://www.npmjs.com/package/sax

[codecov]

Codecov Report

Attention: Patch coverage is 96.07843% with 6 lines in your changes missing coverage. Please review.

Project coverage is 95.94%. Comparing base (f894238) to head (f9ca5d5).
Report is 5 commits behind head on main.

Files with missing lines	Patch %	Lines
library/sources/Sax.ts	95.31%	3 Missing ⚠️
library/sources/sax/wrapEvents.ts	96.29%	3 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #358      +/-   ##
==========================================
+ Coverage   95.93%   95.94%   +0.01%     
==========================================
  Files         156      158       +2     
  Lines        9298     9451     +153     
  Branches     1302     1324      +22     
==========================================
+ Hits         8920     9068     +148     
- Misses        374      379       +5     
  Partials        4        4              

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