add CI workflow, and update tree-sitter #2

	name: CI

	on:
	pull_request:
	branches:
	- "**"
	push:
	branches:
	- "main"

	concurrency:
	group: ${{github.workflow}}-${{github.ref}}
	cancel-in-progress: true

	jobs:
	test:
	name: Test parser
	runs-on: ${{matrix.os}}
	strategy:
	fail-fast: false
	matrix:
	os: [ubuntu-latest, windows-latest, macos-14]
	steps:
	- name: Checkout repository
	uses: actions/checkout@v4
	- name: Set up tree-sitter
	uses: tree-sitter/setup-action/cli@v1
	- name: Run parser and binding tests
	uses: tree-sitter/parser-test-action@v2
	with:
	test-rust: ${{runner.os == 'Linux'}}
	test-swift: ${{runner.os == 'macOS'}}
	- name: Parse sample files
	uses: tree-sitter/parse-action@v4
	id: parse-files
	with:
	files: examples/**
	- name: Upload failures artifact
	uses: actions/upload-artifact@v4
	if: "!cancelled() && steps.parse-files.outcome == 'failure'"
	with:
	name: failures-${{runner.os}}
	path: ${{steps.parse-files.outputs.failures}}
	fuzz:
	name: Fuzz scanner
	runs-on: ubuntu-latest
	steps:
	- name: Checkout repository
	uses: actions/checkout@v4
	with:
	fetch-depth: 2
	- name: Check for scanner changes
	id: scanner-check
	run: \|-
	if git diff --quiet HEAD^ -- src/scanner.c; then
	printf 'changed=false\n' >> "$GITHUB_OUTPUT"
	else
	printf 'changed=true\n' >> "$GITHUB_OUTPUT"
	fi
	- name: Run the fuzzer
	uses: tree-sitter/fuzz-action@v4
	if: steps.scanner-check.outputs.changed == 'true'

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