Implemented a Ollama connection view

[samie]

This guides user if you run the web ui without first starting the Ollama service.

[samie]

Here is Copilot PR review summary. :) I agree on the findings, but also think we can work on these next.

Summary

Code Quality Improvements:

• Log exceptions in isConnected() and getConnectionInfo() methods for better debugging.
• Consider a better approach to retrieve the host value in ConnectionInfo or document the rationale for hardcoding it.

General Feedback:

• The changes are well-structured and improve the robustness of the application by handling connection checks effectively.

Overall, the pull request introduces necessary features and handles connection checks gracefully, with minor improvements needed in exception handling and documentation.