feat: add get/set metadata general domain

src/interfaces.ts

@@ -266,6 +266,16 @@ export interface ICoreKit {
    */
   getKeyDetails(): MPCKeyDetails;
 
+  /**
+   * Get specific general domain's metadata which is used by plugin or modules.
+   */
+  getGeneralStoreDomain<T>(domain: string): T;
+
+  /**
+   * Set specific general domain's metadata which is used by plugin or modules.
+   */
+  setGeneralStoreDomain<T>(domain: string, value: T): void;
+
   /**
    * Commit the changes made to the user's account when in manual sync mode.
    */

src/mpcCoreKit.ts

@@ -985,6 +985,15 @@ export class Web3AuthMPCCoreKit implements ICoreKit {
     this.state = { ...this.state, ...newState };
   }
 
+  public getGeneralStoreDomain<T>(domain: string): T {
+    return this.tkey.metadata.getGeneralStoreDomain(domain) as T;
+  }
+
+  public setGeneralStoreDomain<T>(domain: string, value: T): void {
+    // should we add check for root flag before allow to mutate metadata?
+    this.tkey.metadata.setGeneralStoreDomain(domain, value);
+  }
+
   protected async atomicSync<T>(f: () => Promise<T>): Promise<T> {
     this.atomicCallStackCounter += 1;