Python: Update Learn Docs with Text Search Python Code Samples

[moonbox3]

In our learn docs, the C# code samples are present, but Python samples are missing:

https://learn.microsoft.com/en-us/semantic-kernel/concepts/text-search/?pivots=programming-language-python

[shethaadit]

H @moonbox3 / @eavanvalkenburg / @markwallace-microsoft / @sophialagerkranspandey, I have raised PR for this
MicrosoftDocs/semantic-kernel-docs#229

could you please review?

[github-actions]

This issue is stale because it has been open for 90 days with no activity.