Adding population to the summary tables

[timlinux]

New field names for pop to be added to all summary tables:

See #55

Podes should use a generic term "census"

census_population
census_females
census_males
census_unemployed
census_elderly

Worldpop should use specific prefix 'worldpop_'

worldpop_affected_high_hazard
worldpop_affected_low_hazard

@lucernae please provide the Podes data to @NyakudyaA

When importing the podes data, use generic table name like 'census' so that we can use the same model in other countries. For the raster pop we need to use zonal stats technique like described here:

https://www.perrygeo.com/zonal-stats-with-postgis-rasters.html

The stats should be available at event, district, subdistrict, and village level.

[lucernae]

I'll drop off here the data source website for documentations:

https://gis.dukcapil.kemendagri.go.id/peta/

[lucernae]

The local census table part is done.
Next is the worldpop table.
Can you take over this @NyakudyaA for the worldpop?
Do you already know where to get the worldpop source? I want to document it in the repo for now.

[NyakudyaA]

The local census table part is done.
Next is the worldpop table.
Can you take over this @NyakudyaA for the worldpop?
Do you already know where to get the worldpop source? I want to document it in the repo for now.

The data comes from here https://www.worldpop.org/. I think they also have an API (https://www.worldpop.org/sdi/introapi) to access the data but since we will be loading the data once off we can just download it and ingest it.