feat: bootstrap awg2 harness rust workspace and docs

traffic_core/src/cli.rs

@@ -0,0 +1,24 @@
+use std::path::PathBuf;
+
+use clap::{Parser, Subcommand};
+
+#[derive(Debug, Parser)]
+#[command(name = "awg2-harness")]
+pub struct Cli {
+    #[arg(long)]
+    pub config: Option<PathBuf>,
+
+    #[command(subcommand)]
+    pub command: Command,
+}
+
+#[derive(Debug, Subcommand)]
+pub enum Command {
+    Daemon,
+    ApplyLimits,
+    ApplyFirewall,
+    Status,
+    EnsureSwap,
+    ValidateConfig,
+}
+