feat(protocol): add credentials to ThpState

packages/protocol/src/protocol-thp/ThpState.ts

@@ -1,11 +1,13 @@
-import { ThpDeviceProperties } from './messages';
+import { ThpCredentials, ThpDeviceProperties } from './messages';
 
 export type ThpStateSerialized = {
     properties?: ThpDeviceProperties;
+    credentials: ThpCredentials[];
 };
 
 export class ThpState {
     private _properties?: ThpDeviceProperties;
+    private _pairingCredentials: ThpCredentials[] = [];
 
     get properties() {
         return this._properties;
@@ -15,9 +17,22 @@ export class ThpState {
         this._properties = props;
     }
 
+    get pairingCredentials() {
+        return this._pairingCredentials;
+    }
+
+    setPairingCredentials(credentials?: ThpCredentials[]) {
+        if (credentials) {
+            this._pairingCredentials.push(...credentials);
+        } else {
+            this._pairingCredentials = [];
+        }
+    }
+
     serialize(): ThpStateSerialized {
         return {
             properties: this._properties,
+            credentials: this._pairingCredentials,
         };
     }
 }