feat(core): Add optional Error-Output (#7460)

Add an additional optional error output to which all items get sent that
could not be processed.
![Screenshot from 2023-10-18
17-29-15](https://github.com/n8n-io/n8n/assets/6249596/e9732807-ab2b-4662-a5f6-bdff24f7ad55)

Github issue / Community forum post (link here to close automatically):
https://community.n8n.io/t/error-connector-for-nodes/3094

https://community.n8n.io/t/error-handling-at-node-level-detect-node-execution-status/26791

---------

Co-authored-by: OlegIvaniv <me@olegivaniv.com>

packages/editor-ui/src/components/NodeDetailsView.vue

@@ -106,6 +106,7 @@
 						@valueChanged="valueChanged"
 						@execute="onNodeExecute"
 						@stopExecution="onStopExecution"
+						@redrawRequired="redrawRequired = true"
 						@activate="onWorkflowActivate"
 					/>
 					<a
@@ -199,6 +200,7 @@ export default defineComponent({
 	data() {
 		return {
 			settingsEventBus: createEventBus(),
+			redrawRequired: false,
 			runInputIndex: -1,
 			runOutputIndex: -1,
 			isLinkingEnabled: true,
@@ -633,7 +635,8 @@ export default defineComponent({
 
 			if (
 				typeof this.activeNodeType?.outputs === 'string' ||
-				typeof this.activeNodeType?.inputs === 'string'
+				typeof this.activeNodeType?.inputs === 'string' ||
+				this.redrawRequired
 			) {
 				// TODO: We should keep track of if it actually changed and only do if required
 				// Whenever a node with custom inputs and outputs gets closed redraw it in case