Initial commit: Rampart v0.2.0

Multi-layer DDoS protection for Minecraft servers.

- rampart-core: Edge node with XDP/eBPF + Rust L7 filtering
- rampart-manager: REST API with JWT auth, Redis sync
- rampart-cli: CLI tool for operators
- velocity-plugin: Domain check, HMAC verify, server registry, load balancer
- paper-plugin: Auto-registration, heartbeat, HMAC verify
- dashboard: React + Vite web UI for management

crates/rampart-core/src/lib.rs

@@ -0,0 +1,9 @@
+pub mod config;
+pub mod crypto;
+pub mod filter;
+pub mod metrics;
+pub mod proxy;
+pub mod store;
+
+#[cfg(feature = "xdp")]
+pub mod xdp;