Added test case BG7

[BigGeF]

Description

Added BG7 test case in readingsBarGroupQuantity.js
Added file expected_bar_group_ri_15-20_mu_kWh_gu_kWh_st_2022-08-20%07#25#35_et_2022-10-28%13#18#28_bd_13.csv

Mason Sain - @sainmas
Evan Thomas - @ethomas5
Pedro Valdovinos Reyes - @PValdovinos

Partly addresses #692

Fixes #[issue]

Type of change

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

Checklist

• 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.

Limitations

[huss]

Thanks to @BigGeF, @sainmas, @ethomas5 & @PValdovinos for their first contribution to OED. Testing and review found it works as expected. I did make a few comments that I would appreciate your response/action.

[ethomas5]

@huss Not sure if resolving the changes pinged you on this, but just letting you know we got the PR comments addressed (hopefully).

[huss]

Thanks to the team of @BigGeF, @sainmas, @ethomas5 & @PValdovinos for quickly addressing the comments. Review and testing found that all is in order. Congratulations on your first accepted contribution to OED.