chore: bump all packages to 0.3.0

[bburda]

Pull Request

Summary

Bump all ros2_medkit packages from 0.2.0 (and 0.1.0 for integration_tests/docs) to 0.3.0. Add CHANGELOG.rst entries for each package summarizing all changes since 0.2.0.

Files changed

• 7x package.xml - version bump to 0.3.0
• 7x CHANGELOG.rst - new 0.3.0 section (created for ros2_medkit_integration_tests)
• docs/conf.py - version + release to 0.3.0
• docs/pyproject.toml - version to 0.3.0
• QUALITY_DECLARATION.md - version references updated

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Issue

• closes

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Type

• Bug fix
• New feature or tests
• Breaking change
• Documentation only

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Testing

Version-only change - no functional impact. CI build will validate package.xml schema and CHANGELOG.rst formatting.

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Checklist

• Breaking changes are clearly described (and announced in docs / changelog if needed)
• Tests were added or updated if needed
• Docs were updated if behavior or public API changed

[Copilot]

Pull request overview

This PR bumps all ros2_medkit packages from version 0.2.0 (and 0.1.0 for integration_tests) to version 0.3.0, synchronized across the monorepo. It adds comprehensive CHANGELOG.rst entries documenting all changes since 0.2.0, including major features like the gateway plugin framework, software updates, SSE subscriptions, and multi-distro CI support for Humble, Jazzy, and Rolling.

Changes:

• Version bump to 0.3.0 in all 7 package.xml files
• CHANGELOG.rst entries added/updated for all 7 packages with release date 2026-02-27
• Documentation version updated in docs/conf.py and docs/pyproject.toml
• QUALITY_DECLARATION.md references updated to 0.3.0

Reviewed changes

Copilot reviewed 17 out of 17 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
src/ros2_medkit_serialization/package.xml	Version bump to 0.3.0
src/ros2_medkit_serialization/CHANGELOG.rst	Added 0.3.0 entry with multi-distro CI changes
src/ros2_medkit_msgs/package.xml	Version bump to 0.3.0
src/ros2_medkit_msgs/CHANGELOG.rst	Added 0.3.0 entry with multi-distro CI changes
src/ros2_medkit_integration_tests/package.xml	Version bump from 0.1.0 to 0.3.0
src/ros2_medkit_integration_tests/CHANGELOG.rst	New file created with 0.3.0 entry documenting package creation and multi-distro CI
src/ros2_medkit_gateway/package.xml	Version bump to 0.3.0
src/ros2_medkit_gateway/CHANGELOG.rst	Added comprehensive 0.3.0 entry with 13 major changes including plugins, SSE, rate limiting, and performance improvements
src/ros2_medkit_fault_reporter/package.xml	Version bump to 0.3.0
src/ros2_medkit_fault_reporter/CHANGELOG.rst	Added 0.3.0 entry with multi-distro CI changes
src/ros2_medkit_fault_manager/package.xml	Version bump to 0.3.0
src/ros2_medkit_fault_manager/CHANGELOG.rst	Added 0.3.0 entry with fault management improvements and fixes
src/ros2_medkit_diagnostic_bridge/package.xml	Version bump to 0.3.0
src/ros2_medkit_diagnostic_bridge/CHANGELOG.rst	Added 0.3.0 entry with multi-distro CI changes
docs/pyproject.toml	Version bump to 0.3.0, trailing newline cleanup
docs/conf.py	Version and release updated to 0.3.0
QUALITY_DECLARATION.md	Updated version references from 0.2.0 to 0.3.0 in three locations