Wasm support

[maxwase]

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[Copilot]

Pull Request Overview

This PR adds WebAssembly (wasm) support to the button-driver crate by refactoring the JavaScript-based instant provider and removing the std dependency requirement for wasm targets.

• Refactored JsInstant into a nested instant::wasm::Instant module for better organization
• Removed std requirement from the wasm feature, enabling no_std wasm usage
• Updated the wasm example to use the new module path
• Consolidated CI clippy checks for improved workflow efficiency

Reviewed Changes

Copilot reviewed 7 out of 10 changed files in this pull request and generated 4 comments.

Show a summary per file

File	Description
src/lib.rs	Removed obsolete public export of JsInstant
src/instant.rs	Moved wasm instant provider into wasm module and renamed type from JsInstant to Instant
examples/wasm/src/lib.rs	Updated to use new instant::wasm::Instant path and added formatting improvements
examples/wasm/Cargo.lock	Updated dependency versions (wasm-bindgen, js-sys, etc.)
examples/stm32/Cargo.lock	Updated button-driver version to 0.2.4 and other dependency versions
examples/stm32-embassy/Cargo.lock	Updated button-driver version to 0.2.4 and other dependency versions
README.md	Added wasm to list of supported targets and updated example instructions
Cargo.toml	Bumped version to 0.2.5, removed std requirement from wasm feature, added default-features = false to js-sys, expanded docs.rs features
.vscode/settings.json	Added multiple features to rust-analyzer configuration
.github/workflows/rust.yml	Consolidated clippy checks into fewer steps, removed --release flag from wasm build

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