restructure frontend and add network settings

frontend/src/types/network.ts

@@ -0,0 +1,58 @@
+export interface InterfaceAddress {
+  family: "ipv4" | "ipv6";
+  address: string;
+  prefixlen: number;
+}
+
+export interface InterfaceInfo {
+  ifindex: number;
+  name: string;
+  state: string;
+  mac?: string | null;
+  mtu: number;
+  flags: string[];
+  addresses: InterfaceAddress[];
+}
+
+export interface RouteInfo {
+  dst?: string | null;
+  gateway?: string | null;
+  prefsrc?: string | null;
+  oif?: number | null;
+  ifname?: string | null;
+  table: number;
+  proto?: number | null;
+  scope?: number | null;
+  type?: number | null;
+}
+
+export interface BridgeInterfaceInfo {
+  ifindex: number;
+  ifname: string;
+  state?: string | null;
+  mtu?: number | null;
+}
+
+export interface BridgeInfo {
+  ifindex: number;
+  ifname: string;
+  state?: string | null;
+  mtu?: number | null;
+  stp_state?: number | null;
+  members: BridgeInterfaceInfo[];
+}
+
+export interface BridgeCreateRequest {
+  name: string;
+  interfaces: string[];
+}
+export interface BridgeRemoveRequest {
+  name: string;
+}
+
+// full-state response shape
+export interface FullState {
+  interfaces: InterfaceInfo[];
+  routes: RouteInfo[];
+  bridges: BridgeInfo[];
+}