Implemented ordering downloads for vulnerabilities

[ricardogsilva]

This PR implements ordering and downloads for vulnerability datasets.

All vulnerability types are supported:

• vulnerability_function
• fragility_function
• damage_to_loss_function

Requests are expected to provide a value for the layer field as vulnerability:{layer-id}. Supported options:

• format. Controls the output format of the vulnerability data. Allowed values: geopackage, csv

Example requests

These requests should be made to the following endpoint:

POST /gfdrr_det/api/v1/order/

{
    "order_items": [
        {
            "layer": "vulnerability:1456",
            "format": "geopackage"
        }, 
        {
            "layer": "vulnerability:1541",
            "format": "geopackage"
        }, 
        {
            "layer": "vulnerability:1595",
            "format": "geopackage"
        }
    ]
}

{
    "order_items": [
        {
            "layer": "vulnerability:1456",
            "format": "csv"
        }, 
    ]
}

# A request that asks for both vulnerability and exposures data
{
    "notification_email": "someaddress@mail.com",
    "order_items": [
        {
            "layer": "vulnerability:1456", 
            "format": "geopackage"
        }, 
        {
            "layer": "vulnerability:1541", 
            "format": "geopackage"
        }, {
            "layer": "vulnerability:1595", 
            "format": "geopackage"
        }, {
            "layer": "vulnerability:1596", 
            "format": "geopackage"
        }, {
            "layer": "exposure:cpv_buildings_127", 
            "format": "shapefile"
        }, {
            "layer": "exposure:cpv_buildings_127", 
            "format": "geopackage"
        }, {
            "layer": "exposure:uga_v10_buildings_136", 
            "format": "geopackage",
            "bbox": "32.594717,3.439704,35.551282,4.608727",
            "taxonomic_categories": "construction_material:masonry"
        }
    ]
}

Other notable changes

• Added the name field to the vulnerabilities detail endpoints - This field was missing from the fragility_function and damage_to_loss_function vulnerability types