feat: Data transformation nodes and actions in Nodes Panel (#7760)

- Split Items List node into separate nodes per action
- Review node descriptions
- New icons
- New sections in subcategories

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Co-authored-by: Giulio Andreini <andreini@netseven.it>
Co-authored-by: Deborah <deborah@starfallprojects.co.uk>
Co-authored-by: Michael Kret <michael.k@radency.com>

packages/nodes-base/nodes/Merge/v2/MergeV2.node.ts

@@ -37,7 +37,7 @@ const versionDescription: INodeTypeDescription = {
 	group: ['transform'],
 	version: [2, 2.1, 2.2],
 	subtitle: '={{$parameter["mode"]}}',
-	description: 'Merges data of multiple streams once data from both is available',
+	description: 'Merge data of two inputs once data from both is available',
 	defaults: {
 		name: 'Merge',
 		color: '#00bbcc',