Ensure all code that generates geography files is tracked

[trynthink]

With this update to the geography mapping spreadsheet, there are eight geography translation files that are not included but continue to be used by final_mseg_converter.py.

Generated by @handichan with post-processing of EULP data:

1. Com_Cdiv_EMM_Elec_EU_RowSums.csv
2. Com_Cdiv_State_Elec_EU_RowSums.csv
3. Res_Cdiv_EMM_Elec_EU_RowSums.csv
4. Res_Cdiv_State_Elec_EU_RowSums.csv

Older files developed, likely by hand, from RECS and CBECS data:

5. Com_Cdiv_Czone_ColSums.txt
6. Com_Cdiv_Czone_RowSums.txt
7. Res_Cdiv_Czone_ColSums.txt
8. Res_Cdiv_Czone_RowSums.txt

Originally posted by @trynthink in #399 (comment)