[FEATURE] Allow user to put name of the model while executing crewai create crew

[krishnaglodha]

Feature Area

Core functionality

Is your feature request related to a an existing bug? Please link it here.

NA

Describe the solution you'd like

atm, when we execute crewai create crew <crew_name> , and select Ollama as provider, the list popups up with only

1. ollama/llama3.1
2. ollama/mixtral

Since ollama has tons of model, it will make sense to let user write the model name (standard or even customised) in CLI.

I know that it can be done later in .env but ability to do it here would be interesting

Describe alternatives you've considered

Changing the MODEL in .env

Additional context

No response

Willingness to Contribute

Yes, I'd be happy to submit a pull request