[CLNP-7527] add GitHub Actions workflow for build and test process

[OnestarLee]

External Contributions

This project is not yet set up to accept pull requests from external contributors.

If you have a pull request that you believe should be accepted, please contact
the Developer Relations team [email protected] with details
and we'll evaluate if we can setup a CLA to allow for the contribution.

For Internal Contributors

[CLNP-7527](https://sendbird.atlassian.net/browse/CLNP-7527)

Description Of Changes

CircleCI -> GithubAction 으로 변경 하였습니다.

Types Of Changes

What types of changes does your code introduce to this project?
Put an x in the boxes that apply_

• Bugfix
• New feature
• Documentation (correction or otherwise)
• Cosmetics (whitespace, appearance (ex) Prettier)
• Build configuration
• Improvement (refactor code)
• Test

[Copilot]

Pull Request Overview

This PR migrates the project's CI/CD pipeline from CircleCI to GitHub Actions, introducing automated build and test workflows while improving the package publishing process with enhanced validation and release type support.

Key Changes:

• Replaced CircleCI configuration with GitHub Actions workflows for continuous integration
• Enhanced the NPM publishing workflow with comprehensive validation, release type support (release/beta/alpha), and improved error handling
• Updated the @release-it/conventional-changelog dependency from v2.0.0 to v10.0.1

Reviewed Changes

Copilot reviewed 5 out of 6 changed files in this pull request and generated 1 comment.

Show a summary per file

File	Description
.circleci/config.yml	Removed CircleCI configuration (115 lines deleted)
.github/workflows/build-and-test.yml	Added new GitHub Actions workflow with separate jobs for linting, TypeScript checking, unit tests, and package building
.github/actions/setup/action.yml	Created reusable composite action for environment setup (Node.js, dependencies, env file injection)
.github/workflows/publish-package.yml	Completely refactored from 68 to 188 lines with enhanced validation logic, release type support, proper error handling, and improved PR interaction
package.json	Updated @release-it/conventional-changelog dependency to v10.0.1

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