Added contract metadata and improved labels #21

	# Based on https://github.com/actions-rs/example/blob/master/.github/workflows/quickstart.yml

	on: [ push, pull_request ]

	name: Basic

	jobs:

	test:
	name: Test Suite
	runs-on: ubuntu-latest
	steps:
	- name: Checkout sources
	uses: actions/checkout@v2

	- name: Install stable toolchain
	uses: actions-rs/toolchain@v1
	with:
	toolchain: stable
	target: wasm32-unknown-unknown
	override: true
	profile: minimal

	- name: Compile WASM contract
	uses: actions-rs/cargo@v1
	with:
	command: wasm
	args: --locked
	env:
	RUSTFLAGS: "-C link-arg=-s"

	- name: Run unit tests
	uses: actions-rs/cargo@v1
	with:
	command: unit-test
	args: --locked
	env:
	RUST_BACKTRACE: 1

	lints:
	name: Lints
	runs-on: ubuntu-latest
	steps:
	- name: Checkout sources
	uses: actions/checkout@v2

	- name: Install stable toolchain
	uses: actions-rs/toolchain@v1
	with:
	toolchain: stable
	override: true
	profile: minimal
	components: rustfmt, clippy

	- name: Run cargo fmt
	uses: actions-rs/cargo@v1
	with:
	command: fmt
	args: --all -- --check

	- name: Run cargo clippy
	uses: actions-rs/cargo@v1
	with:
	command: clippy
	args: -- -D warnings

	- name: Generate schema
	uses: actions-rs/cargo@v1
	with:
	command: schema
	args: --locked

	- name: Verify schema
	uses: tj-actions/verify-changed-files@v8
	id: verify-schema
	with:
	files: schema/.*\.json

	- name: Display changed schemas
	if: steps.verify-schema.outputs.files_changed == 'true'
	run: \|
	echo "The schema files are not in sync with the repository. Please, run 'cargo schema' to generate them again and commit the changes."
	exit 1

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