Better support for trending score

[Wauplin]

Related to https://github.com/huggingface-internal/moon-landing/pull/11062 (private link).

This PR adds support for the trendingScore attribute:

• ModelInfo, DatasetInfo and SpaceInfo now have an official trending_score attribute populated when the server returns it.
• ExpandModelProperty_T, ExpandDatasetProperty_TandExpandSpaceProperty_Tnow have atrendingScoreattribute to ask the server to return this attribute usingexpand[]=trendingScore`
• updated some docstrings

In practice, those changes are purely cosmetic to make the attribute better supported. The ExpandXxxProperty_T are only types to help with autocompletion while the XxxInfo classes are already exposing all fields they receive from the server. This PR helps by making the autocompletion + documentation better and by converting trendingScore => trending_score as an attribute

[HuggingFaceDocBuilderDev]

The docs for this PR live here. All of your documentation changes will be reflected on that endpoint. The docs are available until 30 days after the last update.

[LysandreJik]

Thanks @Wauplin!

[hanouticelina]

All good 👍 thanks @Wauplin

[Wauplin]

Thanks for the reviews! :)