Pyqt-openai

* **Fix syntax error in pyproject.toml**
* Trivial refactoring

**Full Changelog**: https://github.com/yjg30737/pyqt-openai/compare/v0.8.0...v0.8.2

New Features
- Added **JSON mode** feature
- Added **llamaindex streaming** feature
- Added new model for **font settings**
- Added multiple languages support: **Bengali, Urdu, Indonesian, Portuguese**
- Added **import & export prompt** feature
- Combined chatgpt import with general import code-wise
- Added brief manual to each type of chat import
- Added refresh feature for chat history widget

Updates
- Updated constants and models for customizeDialog.py
- Updated GUI related to prompt
- Updated button and toolbutton styles
- Changed filename: language_dict.py to translations.py
- Reorganized DB related to prompts
- Changed icon variable to a specified constant
- Applied PEP8 standards
- Add pyproject.toml
- Get APP_NAME and CONTACT values from pyproject.toml

Fixes
- Fixed TypeError
- Fixed bugs

Refactoring
- Refactored codebase
- Resolved conflicts
- Removed unnecessary \_\_init\_\_.py files in submodules

Miscellaneous
- Added toml package in required packages for supporting Python version below v3.11

What's Changed
* Fixes 128: Convert every element in content['parts'] into a string to prevent errors related to importing the chat that includes the uploaded file

**Full Changelog**: https://github.com/yjg30737/pyqt-openai/compare/v0.7.7...v0.7.8

What's Changed & Added features
* **Add <a href="https://openai.com/index/gpt-4o-mini-advancing-cost-efficient-intelligence/">gpt-4o-mini</a>**

What's Changed & Added features
1. **pyqt-openai will export conversation history as JSON** instead of sqlite DB file.
2. **You can import conversation which exported** from pyqt-openai.
3. **You can import from ChatGPT data.**
4. Reorganizing DB

What's Changed & Added features
* Solving DB related error messages
* Make settings dialog
* You can choose whether or not to ask about running in the background upon exit.
* Users can change the name of the reference database.
* You can choose whether or not to display the Notifier.
* You can choose whether or not to display columns in the chat thread history list and the generated image list.
* Add constants.py for sharing constants
* You can select chat threads to export. (.html, .txt extensions only)