Add Flow Refueling Location Model (FRLM)

[fengzixin0617]

• Add FRLM class and example notebook
• With exact and greedy solver options
• Combined capacited FRLM and basic FRLM

[ljwolf]

Overall, great first pass! We need some more documentation throughout, and we need to consider this in light of the naming conventions and API style of the other problems.

See the comments across the PR for advice.

[codecov]

Codecov Report

❌ Patch coverage is 73.27236% with 263 lines in your changes missing coverage. Please review.
✅ Project coverage is 76.9%. Comparing base (13ca45e) to head (9b36063).
⚠️ Report is 29 commits behind head on main.

Files with missing lines	Patch %	Lines
spopt/locate/flow.py	73.2%	259 Missing ⚠️
spopt/locate/util.py	77.8%	4 Missing ⚠️

Additional details and impacted files

@@           Coverage Diff           @@
##            main    #487     +/-   ##
=======================================
- Coverage   77.8%   76.9%   -0.9%     
=======================================
  Files         27      29      +2     
  Lines       2638    3700   +1062     
=======================================
+ Hits        2053    2846    +793     
- Misses       585     854    +269     

Files with missing lines	Coverage Δ
spopt/locate/__init__.py	100.0% <100.0%> (ø)
spopt/locate/util.py	92.2% <77.8%> (-7.8%)	⬇️
spopt/locate/flow.py	73.2% <73.2%> (ø)

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[gegen07]

Great work! Some comments about the code. I have not reviewed the whole file but I think it is good for this round. :)

[gegen07]

Wow! This is brilliant.
Just minor comments. In summary, the code is much cleaner and organized. Great work!!!!!!

[gegen07]

LGTM 🎩

[ljwolf]

Yes, I'm also fine to ship 😄 super work @fengzixin0617