lucidchart representation of meter schema (TESS-1)

[avpeery]

Created lucidchart representation of the meter schema, please review and suggest changes if needed.

[avpeery]

https://www.lucidchart.com/documents/view/1170959a-7a7c-4791-8c0f-72974e9ceaef#

[avpeery]

note to switch status to an enum field from string