fix: Use lowercase in package and module name

[smockle]

Fixes #18

[Copilot]

Pull Request Overview

This PR renames the package from ariaNotify-polyfill to arianotify-polyfill to follow standard lowercase naming conventions for npm packages and repositories.

• Updates package metadata in package.json to use lowercase naming
• Updates all file references and imports to use the new lowercase filename
• Updates repository URLs and documentation references throughout the codebase

Reviewed Changes

Copilot reviewed 13 out of 13 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
package.json	Updates main/module entry points and repository URL to lowercase
web-test-runner.config.js	Updates script src and import paths to lowercase filenames
tests/web-test-runner/ariaNotify-polyfill.js	Updates file path reference to lowercase
examples/*/index.html	Updates script src attributes to reference lowercase polyfill file
examples/*/ariaNotify-polyfill.js	Updates file path references to lowercase
README.md	Updates package name in installation instructions and import examples
SUPPORT.md	Updates repository URLs and project name references
CONTRIBUTING.md	Updates GitHub repository URLs to lowercase
.github/workflows/publish.yml	Updates workflow reference to use lowercase repository name