Add `.github` folder #1

	name: CI

	on:
	push:
	branches: [ master ]
	pull_request:
	branches: [ master ]

	env:
	CARGO_TERM_COLOR: always

	jobs:
	fmt:
	name: Format
	runs-on: ubuntu-latest
	steps:
	- name: Checkout
	uses: actions/checkout@v3
	- name: Justfile
	run: cargo install just
	- name: Check
	run: just check-fmt

	check-crates:
	name: Check crates
	runs-on: ubuntu-latest
	steps:
	- name: Checkout
	uses: actions/checkout@v3
	- name: Cache
	uses: actions/cache@v3
	with:
	path: \|
	~/.cargo/registry
	~/.cargo/git
	target
	key: ${{ runner.os }}-cargo-default-${{ hashFiles('/Cargo.toml','/Cargo.lock') }}
	- name: Justfile
	run: cargo install just
	- name: Check
	run: just check-crates

	check-crates-msrv:
	name: Check crates (MSRV)
	runs-on: ubuntu-latest
	steps:
	- name: Checkout
	uses: actions/checkout@v3
	- name: Cache
	uses: actions/cache@v3
	with:
	path: \|
	~/.cargo/registry
	~/.cargo/git
	target
	key: ${{ runner.os }}-cargo-msrv-${{ hashFiles('/Cargo.toml','/Cargo.lock') }}
	- name: Justfile
	run: cargo install just
	- name: Check
	run: just check-crates-msrv

	check-docs:
	name: Check docs
	runs-on: ubuntu-latest
	steps:
	- name: Checkout
	uses: actions/checkout@v3
	- name: Cache
	uses: actions/cache@v3
	with:
	path: \|
	~/.cargo/registry
	~/.cargo/git
	target
	key: ${{ runner.os }}-cargo-doc-${{ hashFiles('/Cargo.toml','/Cargo.lock') }}
	- name: Justfile
	run: cargo install just
	- name: Check
	run: just check-docs

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