Apply WireGuard peers to VPS safely

src/main/resources/db/migration/V4__create_wireguard_peers.sql

@@ -0,0 +1,18 @@
+CREATE TABLE wireguard_peers (
+    id UUID PRIMARY KEY,
+    router_id UUID NOT NULL UNIQUE,
+    public_key VARCHAR(255) NOT NULL UNIQUE,
+    vpn_ip VARCHAR(45) NOT NULL,
+    allowed_ips VARCHAR(100) NOT NULL,
+    endpoint_mode VARCHAR(50) NOT NULL,
+    status VARCHAR(50) NOT NULL,
+    created_at TIMESTAMP NOT NULL,
+    updated_at TIMESTAMP NOT NULL,
+
+    CONSTRAINT fk_wireguard_peers_router
+        FOREIGN KEY (router_id)
+        REFERENCES routers(id)
+);
+
+CREATE INDEX idx_wireguard_peers_status
+    ON wireguard_peers(status);