feat(n8n Form Trigger Node): New node (#7130)

Github issue / Community forum post (link here to close automatically):

based on https://github.com/joffcom/n8n-nodes-form-trigger

---------

Co-authored-by: Giulio Andreini <g.andreini@gmail.com>

packages/nodes-base/nodes/Form/FormTrigger.node.json

@@ -0,0 +1,18 @@
+{
+	"node": "n8n-nodes-base.formTrigger",
+	"nodeVersion": "1.0",
+	"codexVersion": "1.0",
+	"categories": ["Core Nodes"],
+	"alias": ["_Form", "form", "table", "submit", "post"],
+	"resources": {
+		"primaryDocumentation": [
+			{
+				"url": "https://docs.n8n.io/integrations/builtin/core-nodes/n8n-nodes-base.formtrigger/"
+			}
+		],
+		"generic": []
+	},
+	"subcategories": {
+		"Core Nodes": ["Helpers", "Other Trigger Nodes"]
+	}
+}