feat: make sig checks optional

packages/system/src/index.ts

@@ -41,6 +41,11 @@ export * from "./cache/user-metadata";
 export * from "./cache/relay-metric";
 
 export interface SystemInterface {
+  /**
+   * Check event signatures (reccomended)
+   */
+  checkSigs: boolean;
+
   /**
    * Handler function for NIP-42
    */