chore: initial snapshot of 2meet-data-optimizer-bookings-addon v0.1.0

Baseline before backporting wp-data-optimizer v3.0.1-v3.4.6.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01TbG1keQQ7XBa7qMQY16KCY

CHANGELOG.md

@@ -0,0 +1,22 @@
+# Changelog
+
+All notable changes to this AddOn will be documented here.
+
+Format follows [Keep a Changelog](https://keepachangelog.com/en/1.1.0/).
+Versioning follows [Semantic Versioning](https://semver.org/).
+
+---
+
+## [Unreleased]
+
+- Phase 4 implementation in progress.
+
+---
+
+## [0.1.0] — TBD
+
+### Added (initial release, scaffold)
+
+- Plugin scaffold from `wp-data-optimizer v2.16.0` extraction plan.
+- Plugin Header + bootstrap stub + 7 MD + composer.json.
+- Requires Plugins: `2meet-data-optimizer`, `2meet-bookings`.