Ollama version requirement check and warning.

[jamescho72]

Description:
New granite gen 3 models require a minimum version of Ollama 0.3.14
Check version and provide warning if below minimum requirement.
Exit installer so user can update ollama if neccessary.

[chetan-hireholi]

Thank you @jamescho72 for the feedback.

Until we have any fixes from development, I have update the README setup instructions with the Ollama update command.

If you have installed Ollama via brew (for Mac)

brew upgrade ollama

If you have installed Ollama via package installer
Ollama on macOS and Windows will automatically download updates. Click on the taskbar or menubar item and then click "Restart to update" to apply the update. Updates can also be installed by downloading the latest version manually.

On Linux, re-run the install script:

curl -fsSL https://ollama.com/install.sh | sh

fyi, @alvkhtan