docs(release): update changelog and readme for v0.0.12

Added information on new features including a customizable system message setting and support for o1-mini and o1-preview models. Noted usage tier limitations for new models.

feat(extension): update to GPT-4o and 2024 models, fix editor view

- Added support for 2024 OpenAI models including `gpt-4o`, `gpt-4-turbo`, and previews.
- Fixed Editor View to use selected models instead of legacy ones.
- Resolved issues with Genie: Generate commit message due to VS Code API updates.
- Introduced new menu item to run the Genie: Generate commit message command.

⏫ GPT-4 & GPT-3.5 Turbo models added

✨ Azure OpenAI Service and Rename/remove functionality built-in

Updated readme FAQ

Conversation History - V0.0.3 Release