Python: Update Python getting-started notebooks

[TaoChenOSU]

Motivation and Context

Went through the Python getting-started notebooks and found some issues. Updating the notebooks to address the issues.

Description

1. 00-getting-started.ipynb: (improvement) clear all the services before registering new ones. This will allow users to rerun the just the cells without it throwing "Service already exists".
2. 01-basic-loading-the-kernel.ipynb: (improvement) clear all the services before registering new ones. This will allow users to rerun the just the cells without it throwing "Service already exists".
3. 10-multiple-results-per-prompt.ipynb: (fix) the hugging face service is not set up to return multiple responses.

Contribution Checklist

• The code builds clean without any errors or warnings
• The PR follows the SK Contribution Guidelines and the pre-submission formatting script raises no violations
• All unit tests pass, and I have added new tests where possible
• I didn't break anyone 😄

[markwallace-microsoft]

Python 3.10 Test Coverage Report •

File	Stmts	Miss	Cover	Missing
TOTAL	6140	717	88%

report-only-changed-files is enabled. No files were changed during this commit :)

Python 3.10 Unit Test Overview

Tests	Skipped	Failures	Errors	Time
1434	1 💤	0 ❌	0 🔥	23.494s ⏱️

[glahaye]

I like it

[juliomenendez]

Are we forcing users to write prompts and history in this custom XML format?

[TaoChenOSU]

Are we forcing users to write prompts and history in this custom XML format?

It's a feature that the prompt template supports. Prompts of this format will be parsed into a chat history object underneath.

[moonbox3]

I think I'm a bit lost. What's the requirement on removing the ChatHistory object? I think this could warrant a separate example showing how the ChatHistory can be constructed with XML; but I don't think this particular getting_started example needs to be changed. The changes you propose are definitely valid, but may be better for a concept example.

[TaoChenOSU]

Another option is the following:
We completely rewrite this sample to just show case the use of kernel argument, and add a new sample:

1. A new sample to show how the XML prompt will get translated to a chat history object when using a chat completion API.

I believe we already have samples to show how to use the chat history class: https://github.com/microsoft/semantic-kernel/blob/main/python/samples/concepts/chat_completion/azure_chat_gpt_api.py