feat: adding llvm source based coverage #30

	name: Coverage
	on:
	push:
	branches:
	- master
	pull_request:
	env:
	RUSTFLAGS: -D warnings

	jobs:
	coverage:
	runs-on: ${{ matrix.platform }}
	name: "${{ matrix.example }} - ${{ matrix.platform }}"
	strategy:
	matrix:
	platform: [macos-latest]
	toolchain: [nightly-aarch64-apple-darwin]
	package: [cross-contract-calls, fungible-token]
	features: ['', '--features unstable,legacy,__abi-generate']
	steps:
	- uses: actions/checkout@v3
	- name: Install Homebrew
	run: \|
	/bin/bash -c "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/HEAD/install.sh)"
	- name: Install LLVM
	run: brew install llvm
	- name: Add LLVM to PATH
	run: echo "/opt/homebrew/opt/llvm/bin" >> $GITHUB_PATH
	- name: Install cargo-llvm-cov
	run: brew install cargo-llvm-cov
	- name: Llvm version
	run: llvm-config --version
	- name: Clang version
	run: clang --version
	- name: "${{ matrix.toolchain }} with rustfmt, and wasm32"
	uses: actions-rs/toolchain@v1
	with:
	profile: minimal
	toolchain: ${{ matrix.toolchain }}
	target: wasm32-unknown-unknown
	- name: Rust version
	run: rustc --version --verbose
	- name: Add rust-src component
	run: rustup component add rust-src --toolchain ${{ matrix.toolchain }}
	- name: Generate code coverage
	run: cargo llvm-cov --lcov --output-path llvm-cov-output.lcov
	- name: Upload coverage reports to Codecov
	uses: codecov/codecov-action@v4
	with:
	fail_ci_if_error: true
	files: ./llvm-cov-output.lcov
	token: ${{ secrets.CODECOV_TOKEN }}
	verbose: true

Provide feedback