Add Maintainability and Test Coverage badges #105

	name: tests
	on: [push, pull_request]
	jobs:
	build:
	strategy:
	matrix:
	ruby: ["3.1", "3.2", "3.3"]
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v4
	- uses: ruby/setup-ruby@v1
	with:
	ruby-version: ${{ matrix.ruby }}
	bundler-cache: true
	- name: Set up Code Climate test reporter
	run: \|
	curl -L https://codeclimate.com/downloads/test-reporter/test-reporter-latest-linux-amd64 > ./cc-test-reporter
	chmod +x ./cc-test-reporter
	- name: Before build
	run: ./cc-test-reporter before-build
	- name: Run tests
	run: bundle exec rake test
	- name: After build
	run: \|
	./cc-test-reporter after-build --exit-code ${{ job.status }} -t simplecov -r 503b90af6f7d19fdb5efdfbebc093049baaf24fe6f15a206240ceef2a438620d

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