feat: Add ReEDS parser to the public version and some Plexos exporter fixes

[pesap]

No description provided.

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 91.03261% with 33 lines in your changes missing coverage. Please review.

Project coverage is 61.41%. Comparing base (e963011) to head (c8d8cf8).

Files with missing lines	Patch %	Lines
src/r2x/parser/reeds.py	90.60%	31 Missing ⚠️
src/r2x/exporter/plexos.py	96.77%	1 Missing ⚠️
src/r2x/exporter/utils.py	83.33%	1 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff             @@
##             main      #43       +/-   ##
===========================================
+ Coverage   45.12%   61.41%   +16.29%     
===========================================
  Files          27       29        +2     
  Lines        2624     2978      +354     
===========================================
+ Hits         1184     1829      +645     
+ Misses       1440     1149      -291     

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