✨ Add matrix integration (#1046)

* Added Matrix integration node

* fix: Improve code quality and add new operation

- Changed operation names to match casing (all camelCase)
- Ordering operation names to be alphabetical
- Creating a read all operation to fetch all messages from a room
- Added node subtitle

* fix: add element index so that expressions work on multiple items

* feature: added possibility to upload and send media to Matrix

- Also replacing Promises.all() + Array.map() For a regular for as it messes up ordering

* refactor: merging upload + send Media in a single action

* refactor: improved code quality and endpoints

- Removed sync entirely as a better way to retrieve messages is now
implemeented
- Added rooms dropdown to operations
- Added option to paginate or retrieve all room messages
- Removed option to upload media from text contents. Only files are
accepted now
- Room members has bem moved from the Rooms resource to a standalone
with Get All operation

* ⚡ Small improvements

* ⚡ Added filters to get messages

* ⚡ Minor improvements to Matrix-Integration

Co-authored-by: Omar Ajoue <krynble@gmail.com>
Co-authored-by: ricardo <ricardoespinoza105@gmail.com>

packages/nodes-base/nodes/Matrix/EventDescription.ts

@@ -0,0 +1,73 @@
+import {
+	INodeProperties,
+} from 'n8n-workflow';
+
+export const eventOperations = [
+	{
+		displayName: 'Operation',
+		name: 'operation',
+		type: 'options',
+		displayOptions: {
+			show: {
+				resource: [
+					'event',
+				],
+			},
+		},
+		options: [
+			{
+				name: 'Get',
+				value: 'get',
+				description: 'Get single event by ID',
+			},
+		],
+		default: 'get',
+		description: 'The operation to perform.',
+	},
+] as INodeProperties[];
+
+
+export const eventFields = [
+
+	/* -------------------------------------------------------------------------- */
+	/*                                 event:get                                  */
+	/* -------------------------------------------------------------------------- */
+	{
+		displayName: 'Room ID',
+		name: 'roomId',
+		type: 'string',
+		default: '',
+		placeholder: '!123abc:matrix.org',
+		displayOptions: {
+			show: {
+				operation: [
+					'get',
+				],
+				resource: [
+					'event',
+				],
+			},
+		},
+		required: true,
+		description: 'The room related to the event',
+	},
+	{
+		displayName: 'Event ID',
+		name: 'eventId',
+		type: 'string',
+		default: '',
+		placeholder: '$1234abcd:matrix.org',
+		displayOptions: {
+			show: {
+				operation: [
+					'get',
+				],
+				resource: [
+					'event',
+				],
+			},
+		},
+		required: true,
+		description: 'The room related to the event',
+	},
+] as INodeProperties[];