Add `upload_coverage_report.yml` #9

	---
	name: upload_coverage_report

	# yamllint disable-line rule:truthy
	on:
	workflow_dispatch:
	push:
	branches:
	- main
	pull_request:

	env:
	REPORT_NAME: "lcov.info"

	jobs:
	upload_coverage_report:
	runs-on: ubuntu-latest
	env:
	CARGO_TERM_COLOR: always
	steps:
	- uses: actions/checkout@v4
	- uses: taiki-e/install-action@cargo-llvm-cov
	- name: Generate code coverage
	run: >
	cargo llvm-cov
	--all-features
	--workspace
	--lcov
	--output-path "${{ env.REPORT_NAME }}"
	- name: Upload coverage to codecov
	uses: codecov/codecov-action@v3
	with:
	files: "${{ env.REPORT_NAME }}"
	fail_ci_if_error: true
	...

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