Update CHANGELOG entries and bump version with a patch update in prep for publishing

[gspencergoog]

Description

This bumps the version numbers in the pubspecs and the changelogs, and updates the changelog entries in preparation for publishing 0.6.1.

You will want to commit #630 before running the actual publish.

Summary of Changes

This pull request prepares several packages within the genui ecosystem for an upcoming release by updating their version numbers and corresponding changelog entries. The changes encompass bumping versions to 0.6.1 (or 0.0.1 for genai_primitives), documenting recent bug fixes, new features, and refactoring efforts across the various genui integration and primitive packages. This ensures that the package metadata and release notes are accurate and ready for publishing.

Highlights

• Version Bumps: Updated pubspec.yaml files across six packages (genai_primitives, genui, genui_a2ui, genui_dartantic, genui_firebase_ai, genui_google_generative_ai) to their new release versions (primarily 0.6.1, and 0.0.1 for genai_primitives).
• Changelog Updates: Modified CHANGELOG.md files for all affected packages to reflect the new version numbers and detail specific changes, including new features, fixes, and refactors.
• genai_primitives Initialization: The genai_primitives package received its initial 0.0.1 version and a corresponding changelog entry.
• Specific Package Changes: The genui package includes fixes for DateTimeInput JSON key mapping, a missing weight property in Component, and TextField width in Row layouts. genui_a2ui was refactored to use a local A2A client library. genui_dartantic was re-introduced to the monorepo with DartanticContentGenerator. genui_google_generative_ai fixed an issue ensuring bytes are not null when creating a Blob.

Changelog

• packages/genai_primitives/CHANGELOG.md
  • Added initial changelog entries for version 0.0.1.
• packages/genai_primitives/pubspec.yaml
  • Updated package version from 0.0.1-dev.1 to 0.0.1.
• packages/genui/CHANGELOG.md
  • Updated version 0.6.1 (in progress) to 0.6.1.
  • Added fix for DateTimeInput catalog item JSON key mapping (fix(genui): fix DateTimeInput core catalog item #622).
  • Added fix for missing weight property to Component constructor (fix(genui): add missing weight property to Component constructor; default TextField width to 1 when nested in a Row #603).
  • Added fix for defaulting TextField width to 1 when nested in a Row (fix(genui): add missing weight property to Component constructor; default TextField width to 1 when nested in a Row #603).
• packages/genui/pubspec.yaml
  • Updated package version from 0.6.0 to 0.6.1.
• packages/genui_a2ui/CHANGELOG.md
  • Updated version 0.6.1 (in progress) to 0.6.1.
  • Replaced Updated a2a dependency to ^3.3.0 with Refactor: Switched to using a local implementation of the A2A client library, removing the dependency on package:a2a (#627).
• packages/genui_a2ui/pubspec.yaml
  • Updated package version from 0.6.0 to 0.6.1.
• packages/genui_dartantic/CHANGELOG.md
  • Updated version 0.6.1 (in progress) to 0.6.1.
  • Added feature: Re-introduced package to monorepo with DartanticContentGenerator (Add Dartantic Content Generator #583, Return dartantic to monorepo, update changelogs. #624).
• packages/genui_dartantic/pubspec.yaml
  • Updated package version from 0.6.0 to 0.6.1.
• packages/genui_firebase_ai/CHANGELOG.md
  • Updated version 0.6.1 (in progress) to 0.6.1.
• packages/genui_firebase_ai/pubspec.yaml
  • Updated package version from 0.6.0 to 0.6.1.
• packages/genui_google_generative_ai/CHANGELOG.md
  • Updated version 0.6.1 (in progress) to 0.6.1.
  • Added fix: Ensure bytes are not null when creating Blob in content converter.
• packages/genui_google_generative_ai/pubspec.yaml
  • Updated package version from 0.6.0 to 0.6.1.

[andrewkolos]

LGTM and ready for merge after #630 merges.

[andrewkolos]

I updated this branch, so it now has the fixes from 725a463