build: add ci workflow for building and testing with rust and wasm

[hongjr03]

As requested in #20 (comment), this PR introduces a CI pipeline for oxdraw, enhancing WASM compatibility and improving test coverage for both native and WASM targets.

Additionally, I updated Cargo.toml to set crate-type to ["cdylib", "rlib"], enabling WASM builds, and added wasm-bindgen-test as a dev dependency for WASM testing. The assert_cmd dependency is now conditionally included only for non-WASM targets to prevent compilation issues.

[Copilot]

Pull Request Overview

This PR adds WebAssembly (WASM) compatibility to the oxdraw library, enabling it to be used in browser environments. The changes include WASM-specific test coverage, dependency configuration, and CI workflow updates.

• Adds WASM-specific integration tests for diagram parsing and SVG rendering
• Configures the library as both a cdylib and rlib crate type to support WASM compilation
• Updates CI workflow to test and build WASM packages

Reviewed Changes

Copilot reviewed 4 out of 5 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
tests/wasm_compatibility.rs	New WASM-specific test suite for diagram parsing and rendering
tests/cli.rs	Adds conditional compilation to exclude CLI tests from WASM builds
Cargo.toml	Adds cdylib crate type and platform-specific dev dependencies
Cargo.lock	Adds WASM-related dependencies (wasm-bindgen, js-sys, web-sys, etc.)
.github/workflows/ci.yml	New CI workflow with WASM testing and build steps

Comments suppressed due to low confidence (1)

Cargo.toml:4

• Rust edition '2024' does not exist. The latest stable Rust edition as of January 2025 is '2021'. This should be changed to edition = \"2021\".

edition = "2024"

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[RohanAdwankar]

Awesome I just tested it out in #22 and it seems to be working great! Thankyou!