map all kw to new metadata

[mbernasocchi]

adresses PR #2165
need to put the correct XML mappings for the following _standard_properties:

BaseMetadata:

• title
• license
• scale
• source
• url
• layer_mode
• layer_geometry
• keyword_version
• scale
• source
• layer_purpose ---> this can be inferred from the class (ImpactLayerMetadata, AggregationLayerMetadata, HazardLayerMetadata, ExposureLayerMetadata)

HazardMetadata

• hazard_category
• hazard
• continuous_hazard_unit
• vector_hazard_classification
• raster_hazard_classification

ExposureMetadata

• exposure
• exposure_unit

AggregationMetadata

• aggregation attribute
• adult ratio attribute
• adult ratio default
• elderly ratio attribute
• elderly ratio default
• female ratio attribute
• female ratio default
• youth ratio attribute
• youth ratio default

[mbernasocchi]

added most, still to add the correct mappings to xml

[ismailsunni]

hi @mbernasocchi what's the status of this PR?
Btw, can you update it with develop branch? There is a fix that makes your PR pass.

[ismailsunni]

We also need to keyword for hazard:

value_map : to store the value mapping in hazard classification as dictionary. If it doesn't use classification, let it empty.
field: to store the field name for hazard. The field contains the value for the hazard or the classes.

In the future, we want to use hazard_field and hazard_value_map to replace them. See #2074 Or we can do it in this iteration.

For exposure:
structure_class_field: to store the field name for exposure layer.

[ismailsunni]

Superseded in #2538