feat: add guard method for conditional skipping on override

ref: #970

src/throttler.guard.ts

@@ -58,6 +58,9 @@ export class ThrottlerGuard implements CanActivate {
     const handler = context.getHandler();
     const classRef = context.getClass();
 
+    if (await this.shouldSkip(context)) {
+      return true;
+    }
     const continues: boolean[] = [];
     for (const namedThrottler of this.throttlers) {
       // Return early if the current route should be skipped.
@@ -89,6 +92,10 @@ export class ThrottlerGuard implements CanActivate {
     return continues.every((cont) => cont);
   }
 
+  protected async shouldSkip(_context: ExecutionContext): Promise<boolean> {
+    return false;
+  }
+
   /**
    * Throttles incoming HTTP requests.
    * All the outgoing requests will contain RFC-compatible RateLimit headers.