feat: Add release-please for automated releases

[johnnyhuy]

This PR implements the release-please GitHub Action for automated releases.

Changes

• Added release-please GitHub Action workflow
• Added release-please configuration files
• Updated version handling in pyproject.toml and init.py
• Added initial CHANGELOG.md
• Updated build workflow to use Python actions instead of asdf

Benefits

1. Automated PR Creation: Release-please will automatically create PRs with version bumps and changelog updates based on conventional commits.

2. Automated Releases: When a release PR is merged, it will automatically:

   • Create a GitHub release
   • Publish to PyPI
   • Build and publish Docker images

3. Conventional Commits: Encourages the use of conventional commits for better release notes and semantic versioning.

How It Works

1. When commits are pushed to main, release-please analyzes the commits since the last release
2. If there are releasable changes, it creates a PR with version bumps and changelog updates
3. When the PR is merged, it creates a GitHub release and triggers the publish workflows

This replaces the current manual release process with an automated one that follows semantic versioning principles.