Add a basic CLI for debugging

[tgross35]

Related to #14

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 33.96226% with 70 lines in your changes are missing coverage. Please review.

Project coverage is 68.53%. Comparing base (db77f83) to head (9c24874).

Files	Patch %	Lines
altium/src/sch/record.rs	34.21%	50 Missing ⚠️
altium/src/common.rs	27.27%	16 Missing ⚠️
altium/src/font.rs	0.00%	2 Missing ⚠️
altium/src/sch/params.rs	0.00%	1 Missing ⚠️
altium/src/sch/pin.rs	66.66%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main      #41      +/-   ##
==========================================
- Coverage   70.43%   68.53%   -1.91%     
==========================================
  Files          24       24              
  Lines        2151     2218      +67     
==========================================
+ Hits         1515     1520       +5     
- Misses        636      698      +62     

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