Add a simple smart contract that performs a `hello_world`

[danielcdz]

Summary

• Follow the getting started section from the SNFoundry book to place the starter contract in starknet/contracts.
  • Inside the directory create a new helloWorld directory.

[gadyrcdz]

I am applying to this issue via OnlyDust platform.

My background and how it can be leveraged

A few weeks ago I was working on my first issue and I learned too much from it.

How I plan on tackling this issue

I was reading and learning about "The Starknet Foundry Book", and I think I can solve this issue.

[danielcdz]

@gadyrcdz all yours 🫡

[Manush-2005]

Hey @danielcdz , can I take this issue up, I can complete this

[danielcdz]

hello @Manush-2005 to submit a PR you first need to have the issue assigned!