Added week4 contribution : Trading Project, DocStrings and Unit Test Generators, Langbridge(Open & frontier Models : Python to C++ conversion and execution)

[AsutoshaNanda]

Hello Ed,

This is Asutosha this side. I have added the week4 contributions. Could you please check are there any extra files or folders or stuff I have added in wrong. I will try to solve if there is some issue.

Thanks and regards, Asutosha Nanda

[AsutoshaNanda]

@ed-donner would you please check it?

Thanks and regards

[ed-donner]

Hey Asutosha! Looks like an amazing project. hey I think there are some notebooks without outputs cleared, so this is 5,000 loc - would it be possible to clear outputs and trim this down for me to review? Thanks so much Ed

[AsutoshaNanda]

Sure I will do it in few days and send for review again.