- Updated `AppSidebar` to simplify the layout by removing unnecessary div wrappers around `NavChats` and `NavNotes`.
- Adjusted the number of notes and chats displayed in the sidebar from 5 to 4 for a more compact design.
- Modified `SidebarContent` and `SidebarGroup` styles for improved spacing and layout consistency.
- Added new LLM providers including Google, Azure OpenAI, Bedrock, and others to the backend.
- Updated the model selection UI to dynamically display available models based on the selected provider.
- Enhanced the provider change handling to reset the model selection when the provider is changed.
- Improved the overall user experience by providing contextual information for model selection.
