Initial Release

🐛 fix: Fix missing log entries in OpenAIAssistant.php

- Add a new variable `$log_entry` to store log entries.
- Append each method call and its arguments to `$log_entry`.
- Call the `write_log()` method with `$log_entry` as an argument to write the log entries to a file.
- Add a new private method `write_log()` to handle writing log entries to a file.
- Update the `submit_tool_outputs()` method to write the `$outputs` array to the log file.
- These changes ensure that all tool calls and their outputs are properly logged.