Adding 2020 census tract, block, nta, cdta

[SPTKL]

Changes:

• devcontainer (making it easier to develop under a standardized environment, especially for mac users)
• updateing work area layout to include 2020 geographies

This PR will not break backward compatibility Census_2020_Updates_to_Geosupport.docx

new fields are named as the following:

2020 Census Tract
2020 Census Block
2020 Census Block Suffix
2020 Neighborhood Tabulation Area (NTA)
2020 Community District Tabulation Area (CDTA)

[SPTKL]

Thanks @ishiland