[WIP] Change NREL to NLR, clean up tutorials folder

[shirubana]

[WIP] - As of 3/12/2026, kestrel.hpc.nrel.gov hasn't been updated to kestrel.hpc.nlr.gov. Once that change is happening, we'll move this PR forward.

Describe your changes

More thorough update of NREL to NLR, including HPC addresses and functions, tutorials, the 500+ mentions of the nlr.developer API URL, github URLs, NSRDB url, and packages like NLR-rex.
Note NREL-pysam has not migrated yet and is planned migration on April.

Issue ticket number and link

Type of change

Please delete options that are not relevant.

• [?] Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• [?] Breaking change (fix or feature that would cause existing functionality to not work as expected)
• This change requires a documentation update

Checklist before requesting a review

• [?] I have performed a self-review of my code
• Code changes are covered by tests.
• Code changes have been evaluated for compatibility/integration with Scenario analysis (for future PRs)
• Code changes have been evaluated for compatibility/integration with geospatial autotemplating (for future PRs)
• New functions added to init.py
• API.rst is up to date, along with other sphinx docs pages
• Example notebooks are rerun and differences in results scrutinized
• What's new changelog has been updated in the docs

[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 74.70%. Comparing base (51172fd) to head (deac2dc).
⚠️ Report is 490 commits behind head on development.

Additional details and impacted files

@@               Coverage Diff               @@
##           development     #319      +/-   ##
===============================================
+ Coverage        71.66%   74.70%   +3.04%     
===============================================
  Files               40       41       +1     
  Lines             4524     4823     +299     
===============================================
+ Hits              3242     3603     +361     
+ Misses            1282     1220      -62     

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[RDaxini]

I think we want to keep the .py files for the notebooks. Was their deletion in error?

Had a chat with and requested a review from Martin as there might also be issues with the main branch commits but I don't have access for modifications there.

Thanks for working on the name change though!

[shirubana]

We are keeping the .py, I just deleted ones that were not properly placed