Enhance Ollama Model Integration and Type Definitions

[TarekS93]

This pull request introduces improvements to the Ollama model integration and refines type definitions for better type safety and clarity. The changes are primarily focused on the constants.ts and types.ts files.

Key Changes:

1. In constants.ts:

   • Updated imports to include OllamaApiResponse and OllamaModel types.
   • Modified the getOllamaModels function to use the newly defined types.
   • Improved type safety by specifying the response type as OllamaApiResponse.
   • Updated the model mapping to use the OllamaModel type instead of any.

2. In types.ts:

   • Made the OllamaModel interface exportable by adding the export keyword.
   • This change allows the interface to be imported and used in other parts of the application, enhancing type consistency across the project.

These updates improve the overall type safety of the application, particularly in handling Ollama model data. They also enhance code readability and maintainability by using more specific types instead of any.

The changes are minimal but impactful, ensuring better integration with the Ollama API and providing a more robust type system for future development.