feat(dev-ex): cw-nibiru template for contracts as `just` command

[Unique-Divine]

Purpose/Abstract

Create a command similar to CosmWasm/cw-template that generates a working Rust project based on the structure of cw-nibiru with a working justfile and trivial example smart contract.

This will be useful for developers that may be new Rust or CosmWasm development and should be reminiscent of "create-react-app" or "create-next-app".

2024-05-09

@CalicoNino worked on this as the template branch of the repo. Maybe we can add a CI workflow specific to the template based on a shell script that runs through the commands.