add file copy method

Author: bishosilwal

lib/imagekitio/client.rb

@@ -116,6 +116,10 @@ def bulk_ai_tags_remove(file_ids = [], ai_tags = [])
       @file.batch_ai_tags_remove(file_ids, ai_tags)
     end
 
+    def copy_file(source_file_path, destination_path)
+      @file.copy(source_file_path, destination_path)
+    end
+
     def phash_distance(first, second)
       # Get hamming distance between two phash(image hash) to check
       # similarity between images

lib/imagekitio/file.rb

@@ -142,6 +142,12 @@ def batch_ai_tags_remove(file_ids, ai_tags)
       @req_obj.request('post', url, @req_obj.create_headers, payload)
     end
 
+    def copy(source_file_path, destination_path)
+      url = "#{constants.BASE_URL}/copy"
+      payload = { 'sourceFilePath': source_file_path, 'destinationPath': destination_path }
+      @req_obj.request('post', url, @req_obj.create_headers, payload)
+    end
+
     def validate_upload_options(options)
 
       #  Validates upload value, checks if params are valid,