added flutter setup in publish.yml #3

	name: Publish to pub.dev

	on:
	push:
	tags:
	# must align with the tag-pattern configured on pub.dev, often just replace
	# with [0-9]+.[0-9]+.[0-9]+*
	- 'v[0-9]+.[0-9]+.[0-9]+*' # tag-pattern on pub.dev: 'v'
	# If you prefer tags like '1.2.3', without the 'v' prefix, then use:
	# - '[0-9]+.[0-9]+.[0-9]+*' # tag-pattern on pub.dev: ''
	# If your repository contains multiple packages consider a pattern like:
	# - 'my_package_name-v[0-9]+.[0-9]+.[0-9]+*'

	# Publish using the reusable workflow from dart-lang.
	jobs:
	publish:
	permissions:
	id-token: write # Required for authentication using OIDC
	runs-on: ubuntu-latest
	steps:
	# Checkout repository
	- uses: actions/checkout@v4
	# Setup Flutter SDK
	- uses: subosito/flutter-action@v1
	with:
	channel: 'stable'
	# Setup Dart SDK with JWT token
	- uses: dart-lang/setup-dart@b64355ae6ca0b5d484f0106a033dd1388965d06d
	# Minimal package setup and dry run checks.
	- name: Install dependencies
	run: flutter pub get
	- name: Publish - dry run
	run: dart pub publish --dry-run
	# Publishing...
	- name: Publish to pub.dev
	run: dart pub publish -f

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