ref: simplify e2e infra & decouple it from workspaces #137

	name: e2e-tests
	# This workflow runs our end-to-end tests suite.
	#
	# It roughly follows these steps:
	# - A local `nitro-testnode` gets spun up.
	# - The test suite runs.
	#
	# Contract deployments and account funding happen on a per-test basis.
	permissions:
	contents: read
	on:
	push:
	branches: [ main ]
	pull_request:
	concurrency:
	group: ${{ github.workflow }}-${{ github.head_ref \|\| github.run_id }}
	cancel-in-progress: true
	env:
	CARGO_TERM_COLOR: always
	jobs:
	e2e-tests:
	name: integration tests suite
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v4
	- uses: actions/cache@v4
	with:
	path: \|
	~/.cargo/registry/index/
	~/.cargo/registry/cache/
	~/.cargo/git/db/
	target/
	key: ${{ runner.os }}-cargo-${{ hashFiles('Cargo.lock') }}

	- name: cache cargo-stylus
	uses: actions/cache@v4
	with:
	path: \|
	~/.cargo/bin/
	~/.cargo/.crates.toml
	key: ${{ runner.os }}[email protected]
	save-always: true

	- name: set up rust
	uses: dtolnay/rust-toolchain@master
	id: toolchain
	with:
	target: wasm32-unknown-unknown
	components: rust-src
	toolchain: nightly-2024-01-01

	- name: install cargo-stylus
	run: RUSTFLAGS="-C link-args=-rdynamic" cargo install [email protected]

	- name: setup nitro node
	run: ./scripts/nitro-testnode.sh -d -i
	- name: install solc
	run: \|
	curl -LO https://github.com/ethereum/solidity/releases/download/v0.8.21/solc-static-linux
	sudo mv solc-static-linux /usr/bin/solc
	sudo chmod a+x /usr/bin/solc
	- name: run integration tests
	run: \|
	export NIGHTLY_TOOLCHAIN=${{steps.toolchain.outputs.name}}
	./scripts/e2e-tests.sh

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