feat: initialize NORA artifact registry

Cloud-native multi-protocol artifact registry in Rust.

- Docker Registry v2
- Maven (+ proxy)
- npm (+ proxy)
- Cargo, PyPI
- Web UI, Swagger, Prometheus
- Local & S3 storage
- 32MB Docker image

Created by DevITWay
https://getnora.io

nora-cli/src/main.rs

@@ -0,0 +1,52 @@
+use clap::{Parser, Subcommand};
+
+#[derive(Parser)]
+#[command(name = "nora-cli")]
+#[command(about = "CLI tool for Nora registry")]
+struct Cli {
+    #[command(subcommand)]
+    command: Commands,
+}
+
+#[derive(Subcommand)]
+enum Commands {
+    /// Login to a registry
+    Login {
+        #[arg(long)]
+        registry: String,
+        #[arg(short, long)]
+        username: String,
+    },
+    /// Push an artifact
+    Push {
+        #[arg(long)]
+        registry: String,
+        path: String,
+    },
+    /// Pull an artifact
+    Pull {
+        #[arg(long)]
+        registry: String,
+        artifact: String,
+    },
+}
+
+#[tokio::main]
+async fn main() {
+    let cli = Cli::parse();
+
+    match cli.command {
+        Commands::Login { registry, username } => {
+            println!("Logging in to {} as {}", registry, username);
+            // TODO: implement
+        }
+        Commands::Push { registry, path } => {
+            println!("Pushing {} to {}", path, registry);
+            // TODO: implement
+        }
+        Commands::Pull { registry, artifact } => {
+            println!("Pulling {} from {}", artifact, registry);
+            // TODO: implement
+        }
+    }
+}