feat: add native Windows setup script (setup_ollama.ps1) for MIE Classifier

[Raakshass]

Description

The current setup_ollama.sh script utilizes Bash commands incompatible with standard Windows PowerShell environments. This creates a barrier for Windows-based contributors attempting to set up the local Ollama MIE model.

This PR introduces setup_ollama.ps1, a native PowerShell equivalent that:

1. Checks for the Ollama service status.
2. Creates the mie-expert model using the existing Modelfile.
3. Performs a verification test to ensure the model responds correctly.

Testing

• Environment: Windows 11, PowerShell 7 / VS Code Terminal.
• Verification: Ran the script successfully. The model was created, and the test payload returned a valid JSON response with classification: "MIE" (screenshot available upon request).

Related Issue

Addresses the cross-platform compatibility gap in the MIE Classifier setup instructions.

[rawatkhushbu]

Is there a good-first-issue I can help with?