Gsp metric

[peterdudfield]

Pull Request

Description

Add MAE and RMSE of PVLive inital and updated estimate

Fixes #

How Has This Been Tested?

added a test

• [x] Yes

Checklist:

• [x] My code follows OCF's coding style guidelines
• [x] I have performed a self-review of my own code
• [x] 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 #9 (aabcfbe) into main (6701825) will increase coverage by 0.11%. The diff coverage is 100.00%.

@@            Coverage Diff             @@
##             main       #9      +/-   ##
==========================================
+ Coverage   99.14%   99.26%   +0.11%     
==========================================
  Files           7        7              
  Lines         234      271      +37     
==========================================
+ Hits          232      269      +37     
  Misses          2        2              

Impacted Files	Coverage Δ
nowcasting_metrics/metrics/mae.py	100.00% <100.00%> (ø)
nowcasting_metrics/metrics/metrics.py	100.00% <100.00%> (ø)
nowcasting_metrics/metrics/rmse.py	100.00% <100.00%> (ø)
nowcasting_metrics/metrics/utils.py	100.00% <100.00%> (ø)

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