Add spatial_aggregation to resource

[odscrachel]

Related issues

Closes #282

Description

Adds free text spatial_aggregation to resource.

Merge checklist

If you added, removed or renamed a field:

• Update the collapse option of the jsonschema directives for dataset, resource, hazard, exposure, vulnerability and loss on reference/schema.md
• Update the diagrams in reference/schema/md
• Update the JSON files in examples

Always:

• Run ./manage.py pre-commit
• Update the changelog (style guide)

Having trouble?

See how to resolve check failures.

[duncandewhurst]

Once my comment is resolved, we should ask Mattia to check that he is happy with the description.

[odscrachel]

"title": "Spatial aggregation",
"description": "The fundamental spatial unit or geometric container used to organise, summarise, or 'bin' the data within this resource. This describes whether the data is unaggregated (e.g., individual building footprints or asset points), or aggregated into standardised administrative divisions (e.g., municipalities), hydrological units (e.g., catchments), or calculated geometric grids (e.g., hexagons or square gridcells).",

@matamadio are you happy with this description for Spatial aggregation?

[duncandewhurst]

"title": "Spatial aggregation",
"description": "The fundamental spatial unit or geometric container used to organise, summarise, or 'bin' the data within this resource. This describes whether the data is unaggregated (e.g., individual building footprints or asset points), or aggregated into standardised administrative divisions (e.g., municipalities), hydrological units (e.g., catchments), or calculated geometric grids (e.g., hexagons or square gridcells).",

@matamadio are you happy with this description for Spatial aggregation?

@matamadio please could we get your input on this one? Thanks!

[matamadio]

Definition sounds good, approved.