feat: added node-tooltips to the editor

src/pages/VisProgPage/visualProgrammingUI/nodes/EndNode.tsx

@@ -55,6 +55,10 @@ export function EndReduce(node: Node, _nodes: Node[]) {
   }
 }
 
+export const EndTooltip = `
+  The end node signifies the endpoint of your program; 
+  the output of the final phase of your program should connect to the end node`;
+
 /**
  * This function is called whenever a connection is made with this node type as the target
  * @param _thisNode the node of this node type which function is called