✨ Add Firebase node (#1173)

* ⚡ Added node for Google firebase Firestore database

* ⚡ added firebase's realtime database node

* Added operation to run queries on documents collection

* Improvements to Firebase Database nodes
- Realtime Database: improved how the node interacts with input database
- Cloud Firestore: improved how the node interacts with input database
- Cloud Firestore: improved input / output format so it's similar to JSON and more intuitive, abstracting Firestore's format

* ⚡ Improvements to Firestore-Node

* ⚡ improvements to Firebase-Node

* ⚡ Improvements

⚡ Improvements

* ⚡ Improvements

* ⚡ Minor improvements to Firebase Nodes

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

packages/nodes-base/nodes/Google/Firebase/CloudFirestore/CollectionDescription.ts

@@ -0,0 +1,114 @@
+import {
+	INodeProperties,
+} from 'n8n-workflow';
+
+export const collectionOperations = [
+	{
+		displayName: 'Operation',
+		name: 'operation',
+		type: 'options',
+		displayOptions: {
+			show: {
+				resource: [
+					'collection',
+				],
+			},
+		},
+		options: [
+			{
+				name: 'Get All',
+				value: 'getAll',
+				description: 'Get all root collections',
+			},
+		],
+		default: 'getAll',
+		description: 'The operation to perform.',
+	},
+] as INodeProperties[];
+
+export const collectionFields = [
+	/* -------------------------------------------------------------------------- */
+	/*                               collection:getAll                            */
+	/* -------------------------------------------------------------------------- */
+	{
+		displayName: 'Project ID',
+		name: 'projectId',
+		type: 'options',
+		default: '',
+		typeOptions: {
+			loadOptionsMethod: 'getProjects',
+		},
+		displayOptions: {
+			show: {
+				resource: [
+					'collection',
+				],
+				operation: [
+					'getAll',
+				],
+			},
+		},
+		description: 'As displayed in firebase console URL',
+		required: true,
+	},
+	{
+		displayName: 'Database',
+		name: 'database',
+		type: 'string',
+		default: '(default)',
+		displayOptions: {
+			show: {
+				resource: [
+					'collection',
+				],
+				operation: [
+					'getAll',
+				],
+			},
+		},
+		description: 'Usually the provided default value will work',
+		required: true,
+	},
+	{
+		displayName: 'Return All',
+		name: 'returnAll',
+		type: 'boolean',
+		default: false,
+		displayOptions: {
+			show: {
+				resource: [
+					'collection',
+				],
+				operation: [
+					'getAll',
+				],
+			},
+		},
+		description: 'If all results should be returned or only up to a given limit.',
+		required: true,
+	},
+	{
+		displayName: 'Limit',
+		name: 'limit',
+		type: 'number',
+		displayOptions: {
+			show: {
+				resource: [
+					'collection',
+				],
+				operation: [
+					'getAll',
+				],
+				returnAll: [
+					false,
+				],
+			},
+		},
+		typeOptions: {
+			minValue: 1,
+			maxValue: 500,
+		},
+		default: 100,
+		description: 'How many results to return.',
+	},
+] as INodeProperties[];