Improve information when hovering wires

src/js/game/components/wire_tunnel.js

@@ -1,4 +1,5 @@
 import { Component } from "../component";
+import { WireNetwork } from "../systems/wire";
 
 export class WireTunnelComponent extends Component {
     static getId() {
@@ -16,5 +17,11 @@ export class WireTunnelComponent extends Component {
     constructor({ multipleDirections = true }) {
         super();
         this.multipleDirections = multipleDirections;
+
+        /**
+         * Linked network, only if its not multiple directions
+         * @type {Array<WireNetwork>}
+         */
+        this.linkedNetworks = [];
     }
 }