[processing] add tags to refactor fields algorithm

Author: nirvn

python/plugins/processing/algs/qgis/FieldsMapper.py

@@ -50,6 +50,9 @@ def group(self):
     def groupId(self):
         return 'vectortable'
 
+    def tags(self):
+        return self.tr('attributes,table').split(',')
+
     def initParameters(self, config=None):
 
         class ParameterFieldsMapping(QgsProcessingParameterDefinition):