Python: Create a sample showing how to perform function calling with a local model

[markwallace-microsoft]

Use Nexus Raven as the model for these samples

• Single function
• Parallel calls
• No calls
• Multiple functions
• Nested functions

[eavanvalkenburg]

will have to follow #6496 and maybe also #6498 #6841 or #6761 since we currently do not support any local models that can support function calling, with the possible exection of Ollama, but there are tasks to further refine Ollama.