Added support for binary data types

- Select data type (string, json, hex, uint, int, float) for each topic individually
- Default data type is 'string'
- Show milliseconds in message received timestamp

backend/src/Model/TreeNode.ts

@@ -2,6 +2,8 @@ import { Destroyable } from './Destroyable'
 import { Edge, Message, RingBuffer, MessageHistory } from './'
 import { EventDispatcher } from '../../../events'
 
+export type TopicDataType = 'string' | 'json' | 'hex' | 'integer' | 'unsigned int' | 'floating point'
+
 export class TreeNode<ViewModel extends Destroyable> {
   public sourceEdge?: Edge<ViewModel>
   public message?: Message
@@ -17,6 +19,7 @@ export class TreeNode<ViewModel extends Destroyable> {
   public onMessage = new EventDispatcher<Message>()
   public onDestroy = new EventDispatcher<TreeNode<ViewModel>>()
   public isTree = false
+  public type: TopicDataType = 'string'
 
   private cachedPath?: string
   private cachedChildTopics?: Array<TreeNode<ViewModel>>