Prepare initial Beta release - changelog

[YashwanthaGowd]

Summary

Adds CHANGELOG.md for the v0.1.0-beta initial public release. The changelog documents everything shipped in this first tag: the core Helm chart features, testing infrastructure, tooling, configuration defaults, documentation, and known limitations. The format follows Keep a Changelog (https://keepachangelog.com/en/1.0.0/).

Related

• Issue: —
• Chart/Component: boundary-worker — v0.1.0-beta

Checklist

• I have documented a clear reason for, and description of, the change I am making.
• Added/updated tests or validation steps (if applicable) — no test changes; this is a docs-only PR
• Verified local lint/validation — no templating changes
• No breaking changes, or clearly documented — docs only
• If applicable, I've documented a plan to revert these changes if they require more than reverting the pull request.
• If applicable, I've documented the impact of any changes to security controls.

[hashicorp-cla-app]

All committers have signed the CLA.