Issue/location gsp read

[peterdudfield]

Pull Request

Description

Add function to read locations and load gsp yields at those locations

helps https://github.com/openclimatefix/nowcasting_api/issues/168

How Has This Been Tested?

• added tests

• ran on live database

• CI tests

• [x] Yes

Checklist:

• [x] My code follows OCF's coding style guidelines
• [x] I have performed a self-review of my own code
• [ ] I have made corresponding changes to the documentation
• [x] I have added tests that prove my fix is effective or that my feature works
• [x] I have checked my code and corrected any misspellings

[codecov-commenter]

Codecov Report

Merging #130 (798dc59) into main (9023397) will increase coverage by 0.07%. The diff coverage is 100.00%.

@@            Coverage Diff             @@
##             main     #130      +/-   ##
==========================================
+ Coverage   95.53%   95.61%   +0.07%     
==========================================
  Files          20       20              
  Lines        1121     1140      +19     
==========================================
+ Hits         1071     1090      +19     
  Misses         50       50              

Impacted Files	Coverage Δ
nowcasting_datamodel/models/gsp.py	93.93% <100.00%> (+0.18%)	:arrow_up:
nowcasting_datamodel/read/read_gsp.py	100.00% <100.00%> (ø)

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