fix: support output size

Author: ivictbor

index.ts

@@ -531,6 +531,7 @@ getBucketLifecycleConfiguration on bucket ${this.options.s3Bucket} in region ${t
                 prompt,
                 inputFiles: attachmentFiles,
                 n: 1,
+                size: this.options.generation.outputSize,
               }
             )
 

types.ts

@@ -118,6 +118,10 @@ export type PluginOptions = {
   generation?: {
     adapter: ImageGenerationAdapter,
 
+    /**
+     * The size of the generated image.
+     */
+    outputSize?: string,
 
     /**
      * Fields for conetext which will be used to generate the image.