Add pacific_power_id to API meter / allBuildings endpoints?

[solderq35]

Could help with debugging on check-acq etc (save time from having to open up MySQL workbench just for debug)

[solderq35]

Relevant code:

• https://github.com/OSU-Sustainability-Office/energy-dashboard/blob/master/backend/dependencies/nodejs/models/meter.js#L12
• https://github.com/OSU-Sustainability-Office/energy-dashboard/blob/master/backend/dependencies/nodejs/models/building.js#L150