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

.dockerignore

@@ -0,0 +1,11 @@
+target/
+.git/
+.gitignore
+.github/
+*.md
+docs/
+crates/*/target/
+plugins/*/build/
+plugins/*/.gradle/
+plugins/.gradle/
+deploy/