✨ Add support to qgis 'postgresraster' layer

[wlorenzetti]

Closes: #651

How to test

0. get latest PostGIS

1. create a database and add postgis_raster extension:

create extension postgis_raster;

2. create a schema g3w_suite and run inside the database the following sql: bluemarble.zip

3. open qgis and check that sql has created a simple bluemarble raster tif layer with EPSG:4326 into db:

Additional notes

If you are working in a mixed setup (ie. a local postgis instance + a g3w-suite-docker container), you should add an extra_hosts directive within your docker-compose-dev.yml to make your local postgres databases accessible from both sides:

  g3w-suite:
    image: g3wsuite/g3w-suite:dev

    ...

    extra_hosts:
      - "postgis16:host-gateway"

taking care to edit your hosts file accordingly:

# Added for G3W-SUITE docker
127.0.0.1 postgis16

For more info:

• https://docs.docker.com/compose/compose-file/compose-file-v3/#extra_hosts