New SC column names

[ppinchuk]

All new default supply curve column updates and updated old column names to contain units and conform to standard.

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 96.63526% with 25 lines in your changes missing coverage. Please review.

Project coverage is 87.58%. Comparing base (0417633) to head (86480a9).

Files	Patch %	Lines
reV/handlers/multi_year.py	56.00%	11 Missing ⚠️
reV/supply_curve/points.py	95.45%	4 Missing ⚠️
reV/econ/economies_of_scale.py	92.85%	2 Missing ⚠️
reV/qa_qc/summary.py	0.00%	2 Missing ⚠️
reV/SAM/SAM.py	95.65%	1 Missing ⚠️
reV/bespoke/bespoke.py	98.24%	1 Missing ⚠️
reV/qa_qc/qa_qc.py	0.00%	1 Missing ⚠️
reV/supply_curve/extent.py	0.00%	1 Missing ⚠️
reV/supply_curve/supply_curve.py	98.76%	1 Missing ⚠️
tests/test_supply_curve_compute.py	98.43%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #455      +/-   ##
==========================================
+ Coverage   87.38%   87.58%   +0.20%     
==========================================
  Files         122      122              
  Lines       17659    18062     +403     
==========================================
+ Hits        15431    15820     +389     
- Misses       2228     2242      +14     

Flag	Coverage Δ
unittests	87.58% <96.63%> (+0.20%)	⬆️

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