feat: add MetaAndAssetContexts to achieve `Retrieve perpetuals asset … #103
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…contexts (includes mark price, current funding, open interest, etc.)`
Introduce `AssetContext` and `MetaAndAssetCtxs` as generic versions of `SpotAssetContext` and `SpotMetaAndAssetCtxs` respectively. These new types allow for more flexible handling of metadata and context for various asset types beyond spot. The `AssetMeta` struct is enhanced with `max_leverage` and `only_isolated` fields to better describe diverse asset characteristics, such as those for perpetual contracts. These changes facilitate broader asset type support within the system.
The `meta_and_asset_contexts` method in `InfoClient` now returns `Result<Vec<MetaAndAssetCtxs>>` instead of `Result<Vec<Meta>>`. This change aligns the function's return type with the actual data structure provided by the corresponding API endpoint, which includes both metadata and asset contexts. This improves type safety and ensures clients receive the complete expected information.
Modify `meta_and_asset_contexts` to return `(Meta, Vec<AssetContext>)`. This change enhances robustness by deserializing `AssetContext` entries individually from raw JSON values, skipping any that fail. Previously, a single malformed context could cause the entire `MetaAndAssetCtxs` request to fail. Additionally, removed `#[allow(dead_code)]` attributes from `MetaAndAssetCtxs` enum variants and related structs in `meta.rs` as part of this refinement.
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…contexts (includes mark price, current funding, open interest, etc.)`