Create a workflow for publishing

[blendthink]

Issue

• close Create a workflow to deploy to pub.dev #11

Overview (Required)

Create a workflow for publishing to pub.dev.

Links

• https://dart.dev/tools/pub/automated-publishing#configuring-a-github-action-workflow-for-publishing-to-pubdev
• https://dart.dev/tools/pub/publishing#preparing-to-publish

Screenshot

It has been confirmed through the command whether it can be published or not.

% dart pub publish --dry-run

Resolving dependencies... 
Got dependencies!
Publishing yumemi_lints 1.0.0 to https://pub.dev:
├── CHANGELOG.md (<1 KB)
├── LICENSE (1 KB)
├── README.md (2 KB)
├── example
│   ├── analysis_options.yaml (<1 KB)
│   ├── main.dart (<1 KB)
│   └── pubspec.yaml (<1 KB)
├── lib
│   ├── dart
│   │   ├── 2.17.0
│   │   │   ├── all.yaml (6 KB)
│   │   │   └── recommended.yaml (1 KB)
│   ...
└── pubspec.yaml (<1 KB)
Validating package... 
Package has 0 warnings.
The server may enforce additional checks.

[github-actions]

Ready for review 🚀

[morikann]

Thanks for your work! LGTM!
I'm excited to release this package!