feat(target_chains/ethereum): add arbirum stylus sdk #18

	# This workflow checks whether the library is able to run without the std
	# library. See `check.yml` for information about how the concurrency
	# cancellation and workflow triggering works.
	name: stylus-no-std
	permissions:
	contents: read
	on:
	pull_request:
	paths:
	- target_chains/ethereum/sdk/stylus/**
	push:
	branches:
	- main
	paths:
	- target_chains/ethereum/sdk/stylus/**
	concurrency:
	group: ${{ github.workflow }}-${{ github.head_ref \|\| github.run_id }}
	cancel-in-progress: true
	env:
	CARGO_TERM_COLOR: always
	jobs:
	nostd:
	runs-on: ubuntu-latest
	name: ${{ matrix.target }}
	defaults:
	run:
	working-directory: target_chains/ethereum/sdk/stylus
	strategy:
	matrix:
	target: [wasm32-unknown-unknown]
	steps:
	- uses: actions/checkout@v4
	with:
	submodules: true
	- name: Install rust
	uses: actions-rust-lang/setup-rust-toolchain@v1
	with:
	toolchain: stable
	rustflags: ""
	- name: Add rust targets ${{ matrix.target }}
	run: rustup target add ${{ matrix.target }}
	- name: Cargo check
	run: cargo check --release --target ${{ matrix.target }} --no-default-features

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