schema: added asset_as_band property in render object

[sim13pods]

asset_as_band (bool): tell rio-tiler that each asset is a 1 band dataset, so expression Asset1/Asset2 can be passed.

Resolves: #12
Implements: https://learn.microsoft.com/en-us/azure/planetary-computer/render-configuration?tabs=restapi#1-expressions
Implements: https://developmentseed.org/titiler/endpoints/stac/#tiles
Co-authored-by: Fabrice Brito fabrice.brito@terradue.com

[sim13pods]

@emmanuelmathot cannot reproduce locally the error:

$ npm install && npm test
npm warn deprecated inflight@1.0.6: This module is not supported, and leaks memory. Do not use it. Check out lru-cache if you want a good and tested way to coalesce async requests by a key value, which is much more comprehensive and powerful.
npm warn deprecated sliced@1.0.1: Unsupported
npm warn deprecated figgy-pudding@3.5.2: This module is no longer supported.
npm warn deprecated trim@0.0.1: Use String.prototype.trim() instead
npm warn deprecated libnpmconfig@1.2.1: This module is not used anymore. npm config is parsed by npm itself and by @npmcli/config
npm warn deprecated glob@7.2.3: Old versions of glob are not supported, and contain widely publicized security vulnerabilities, which have been fixed in the current version. Please update. Support for old versions may be purchased (at exorbitant rates) by contacting i@izs.me

added 257 packages, and audited 258 packages in 14s

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4 high severity vulnerabilities

To address all issues (including breaking changes), run:
  npm audit fix --force

Run `npm audit` for details.

> stac-extensions@2.0.0 test
> npm run check-markdown && npm run check-examples


> stac-extensions@2.0.0 check-markdown
> remark . -f -r .github/remark.yaml

CHANGELOG.md: no issues found
README.md: no issues found

> stac-extensions@2.0.0 check-examples
> stac-node-validator . --lint --verbose --schemaMap https://stac-extensions.github.io/render/v2.0.0/schema.json=./json-schema/schema.json --schemaMap https://stac-extensions.github.io/virtual-assets/v1.0.0/schema.json=./json-schema/schema-vrt.json

STAC Node Validator v1.3.2

- /home/stripodi/Documents/stac-extensions/render/examples/collection.json
-- Lint: File is well-formed
-- STAC Version: 1.0.0
--- Collection: valid
--- https://stac-extensions.github.io/item-assets/v1.0.0/schema.json: valid
--- https://stac-extensions.github.io/render/v2.0.0/schema.json: valid
--- https://stac-extensions.github.io/virtual-assets/v1.0.0/schema.json: valid

- /home/stripodi/Documents/stac-extensions/render/examples/item-landsat8.json
-- Lint: File is well-formed
-- STAC Version: 1.0.0
--- Item: valid
--- https://stac-extensions.github.io/eo/v1.0.0/schema.json: valid
--- https://stac-extensions.github.io/projection/v1.0.0/schema.json: valid
--- https://stac-extensions.github.io/view/v1.0.0/schema.json: valid
--- https://stac-extensions.github.io/render/v2.0.0/schema.json: valid
--- https://stac-extensions.github.io/virtual-assets/v1.0.0/schema.json: valid
--- https://stac-extensions.github.io/web-map-links/v1.2.0/schema.json: valid

- /home/stripodi/Documents/stac-extensions/render/examples/item-sentinel2.json
-- Lint: File is well-formed
-- STAC Version: 1.0.0
--- Item: valid
--- https://stac-extensions.github.io/eo/v1.0.0/schema.json: valid
--- https://stac-extensions.github.io/view/v1.0.0/schema.json: valid
--- https://stac-extensions.github.io/projection/v1.0.0/schema.json: valid
--- https://stac-extensions.github.io/raster/v1.0.0/schema.json: valid
--- https://stac-extensions.github.io/render/v2.0.0/schema.json: valid
--- https://stac-extensions.github.io/virtual-assets/v1.0.0/schema.json: valid

Files: 3
Valid: 3
Invalid: 0
Malformed: 0

Not sure what the error is about in the pipeline

[emmanuelmathot]

Seems good to me but an example would help to understand how it works

[sim13pods]

@emmanuelmathot requested example added

[emmanuelmathot]

I suggest simplifying the examlple to focus on render

[emmanuelmathot]

@sim13pods I cannot push on your branch the simplified example (you did not allow changes for reviewers). So that's why I proposed suggestions. Please apply them to have a simpler example., Then we are good to merge.

[emmanuelmathot]

Please remove the histograms. They are huge and there is no value adding them here and may confuse adopters.

[sim13pods]

@emmanuelmathot histograms removed (GitHub editor somehow stopped working) and CHANGELOG updated

[emmanuelmathot]

@sim13pods please check the asset_as_band values in your example. You can test with npm test