refactor: rename zrange to zrange_by_score and update related documen…

[ruslanti]

…tation

[Copilot]

Pull Request Overview

This pull request refactors the sorted set range query API by renaming zrange to zrange_by_score and updating its return type to include scores alongside values. The change improves API clarity by making the function name more descriptive and returns richer data by including score information.

• Renamed zrange to zrange_by_score across WIT interface, FFI bindings, and Rust implementation
• Updated return type from Vec<Vec<u8>> to Vec<(Vec<u8>, f64)> to include score information
• Enhanced documentation to clarify score-based filtering behavior

Reviewed Changes

Copilot reviewed 4 out of 4 changed files in this pull request and generated 2 comments.

File	Description
wit/key-value.wit	Removed type aliases and renamed zrange to zrange_by_score with updated return type; improved documentation
src/proxywasm/mod.rs	Renamed FFI function from proxy_kv_store_zrange to proxy_kv_store_zrange_by_score
src/proxywasm/key_value.rs	Implemented zrange_by_score with score deserialization logic and updated documentation
examples/key-value/src/lib.rs	Updated example to use zrange_by_score and display scores

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[Copilot]

Missing import for size_of. Add use std::mem::size_of; to the imports section at the top of the file.