Separate repo for languages #736

Currently there is a mono repo for both python and dotnet, this creates an issue of dependencies where a user needs to install dotnet 7.0 (for Polyglot Notebooks and C# code) even when they only want to use Python. Can we create separate repos for each supported language and then create a wrapper repo that links to the underlying language repo. It can also help improve CI/CD performance as the repo size grows

Today
|-- All Source --}

Future
|---- Semantic-Kernel Main Repo--|
--- Overview
---- Common Docs
---- Link to language repos
|---- SK - Dotnet ---|
---- Code
---- Sample
---- Docs
|---- SK - Python ---|
---- Code
---- Sample
---- Docs