Fixes various issues

[terrier989]

• Improves CI pipeline.
• Adds "package:universal_html/universal_html.dart" to prepare for new import syntax in Dart. Deprecates "package:universal_html/html.dart".
• Formats files.
• Improves documentation.

[Copilot]

Pull Request Overview

This PR prepares the universal_html package for new Dart import syntax by introducing a new package:universal_html/universal_html.dart library entry point and deprecating the old html.dart import. It also includes CI/CD improvements, code formatting, and documentation updates for version 2.2.7.

• Version bump from 2.2.5 to 2.2.7
• Introduction of new lib/universal_html.dart library file with conditional exports
• Deprecation of lib/html.dart in favor of the new import path
• Enhanced CI pipeline with formatting checks, linting, package health analysis, and browser testing
• Code formatting throughout the codebase using Dart formatter
• Removal of web and universal_io dependency updates

Reviewed Changes

Copilot reviewed 42 out of 49 changed files in this pull request and generated 13 comments.

Show a summary per file

File	Description
pubspec.yaml	Version bump to 2.2.7, SDK constraint changed to ^3.6.0, updated lints range, removed web dependency, updated universal_io version
test_in_flutter/pubspec.yaml	Updated SDK constraint to >=3.0.0, removed lints version constraint
lib/universal_html.dart	New library file providing the main entry point with conditional exports for browser/VM
lib/html.dart	Deprecated in favor of universal_html.dart, now simply re-exports it
lib/src/html.dart	Updated import to use new universal_html.dart path, removed library comment, added blank lines between part directives
lib/src/parsing/parsing.dart	Reordered imports, formatting improvements
README.md	Updated import examples to use new universal_html.dart path, version references updated
CHANGELOG.md	Added entries for versions 2.2.7 and 2.2.6
.github/workflows/dart.yml	Comprehensive CI improvements: added formatting check, linting across SDK versions, package health analysis, and Chrome browser tests
.github/workflows/publish.yml	New workflow for automated publishing to pub.dev
.github/FUNDING.yml	Removed funding configuration
lib/src/html/dom/*.dart	Formatting improvements: constructor initializer list alignment, cascade operator alignment
lib/src/html/api/*.dart	Formatting improvements: constructor initializer list alignment, blank lines added between abstract methods
lib/src/controller/*.dart	Formatting improvements: import alignment, parameter formatting
test/src/html/dom/*.dart	Formatting improvements: cascade operator and initializer list alignment

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[Copilot]

Pull Request Overview

Copilot reviewed 42 out of 49 changed files in this pull request and generated 2 comments.

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[Copilot]

[nitpick] The SDK version constraint has been changed from ^3.7.0 to ^3.6.0, which is a downgrade. This seems inconsistent with the PR's goal of improving the codebase. If this is intentional to support older Dart SDK versions, it should be documented in the changelog or PR description.

[Copilot]

[nitpick] The workflow uses actions/checkout@v3, but the latest major version is v4. Consider upgrading to actions/checkout@v4 for the latest features and bug fixes.