NodeGraph: Support icons for nodes (#60989)

packages/grafana-data/src/utils/nodeGraph.ts

@@ -1,12 +1,28 @@
 export enum NodeGraphDataFrameFieldNames {
+  // Unique identifier [required] [nodes + edges]
   id = 'id',
+  // Text to show under the node [nodes]
   title = 'title',
+  // Text to show under the node as second line [nodes]
   subTitle = 'subtitle',
+  // Main value to be shown inside the node [nodes]
   mainStat = 'mainstat',
+  // Second value to be shown inside the node under the mainStat [nodes]
   secondaryStat = 'secondarystat',
-  source = 'source',
-  target = 'target',
-  detail = 'detail__',
+  // Prefix for fields which value will represent part of the color circle around the node, values should add up to 1 [nodes]
   arc = 'arc__',
+  // Will show a named icon inside the node circle if defined. Can be used only with icons already available in
+  // grafana/ui [nodes]
+  icon = 'icon',
+  // Defines a single color if string (hex or html named value) or color mode config can be used as threshold or
+  // gradient. arc__ fields must not be defined if used [nodes]
   color = 'color',
+
+  // Id of the source node [required] [edges]
+  source = 'source',
+  // Id of the target node [required] [edges]
+  target = 'target',
+
+  // Prefix for fields which will be shown in a context menu [nodes + edges]
+  detail = 'detail__',
 }