Rust Secret Cipher CLI

In this guided project, we will build a command line application in Rust that can encrypt and decrypt text using a caesar cipher. The caesar cipher is a simple substitution cipher that shifts the letters of the alphabet by a set number of places. By the end of this guided project, you will be able to: * Create a command line interface (CLI) application in Rust * Implement caesar cipher encryption and decryption functions in Rust * Build an executable binary that can encrypt/decrypt input text using caesar cipher * Use Cargo for dependency and build management