Gazetteer: reactor so the source is a DataFrame (#43783)

packages/grafana-data/src/transformations/transformers/ids.ts

@@ -28,5 +28,6 @@ export enum DataTransformerID {
   prepareTimeSeries = 'prepareTimeSeries',
   convertFieldType = 'convertFieldType',
   fieldLookup = 'fieldLookup',
+  setGeometry = 'setGeometry',
   extractFields = 'extractFields',
 }

packages/grafana-data/src/types/dataFrame.ts

@@ -15,6 +15,7 @@ export enum FieldType {
   boolean = 'boolean',
   // Used to detect that the value is some kind of trace data to help with the visualisation and processing.
   trace = 'trace',
+  geo = 'geo',
   other = 'other', // Object, Array, etc
 }