LG3 test implementation

[AchsahJojo]

• Implementation of code for LG3: should have daily points for middle readings of 15 + 20 minute for a 61 day period and quantity units with kWh as kWh
• Included relevant test data CSV

Co-authored by: Achsah Jojo achsahmaria.jojo@gmail.com
Co-authored by: Adrian Haro aharo1110@gmail.com
Co-authored by: Alireza Manizani amanizan@uci.edu

Type of change

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• Note merging this changes the database configuration.
• This change requires a documentation update

Checklist

(Note what you have done by placing an "x" instead of the space in the [ ] so it becomes [x]. It is hoped you do all of them.)

• I have followed the OED pull request ideas
• I have removed text in ( ) from the issue request
• You acknowledge that every person contributing to this work has signed the OED Contributing License Agreement and each author is listed in the Description section.

[huss]

Thanks to @AchsahJojo, @aharo1110 & @aligence for their first contribution to OED. A code review and testing found no concerns and the test case runs as expected. This is ready to merge. Congratulations on your first accepted work into OED.