feat: Implement the shell of the CLI API

src/main.rs

@@ -1,3 +1,35 @@
+use clap::{Parser, Subcommand};
+
+#[derive(Parser, Debug)]
+#[command(version)]
+#[command(about = "🎂 CLI tool to remember birthdays of people you know")]
+struct Cli {
+    #[command(subcommand)]
+    command: Command,
+}
+
+#[derive(Subcommand, Debug)]
+enum Command {
+    #[command(about = "Add a person's birthday")]
+    Add { name: String, date: String },
+    #[command(about = "Show all birthdays")]
+    All {},
+    #[command(about = "Show the next birthday")]
+    Next {},
+
+    #[command(about = "Search for birthdays")]
+    #[command(arg_required_else_help(true))]
+    Search {
+        #[arg(short, long, help = "match for names containing <NAME>")]
+        name: Option<String>,
+        #[arg(short, long, help = "match for a specific <DATE>")]
+        date: Option<String>,
+    },
+    #[command(about = "Show today's birthdays")]
+    Today {},
+}
+
 fn main() {
-    println!("Hello, world!");
+    let args = Cli::parse();
+    println!("You ran cli with: {:?}", args);
 }