⚡ Feature/salesforce jwt bearer (#1082)

* Salesforce - OAuth 2.0 JWT Bearer Flow for Server-to-Server Integration

* ⚡ Small improvements

* ⚡ Small fix

Co-authored-by: Craig McElroy <craig@mcelroyfamily.com>

packages/nodes-base/credentials/SalesforceJwtApi.credentials.ts

@@ -0,0 +1,54 @@
+import {
+	ICredentialType,
+	NodePropertyTypes,
+} from 'n8n-workflow';
+
+export class SalesforceJwtApi implements ICredentialType {
+	name = 'salesforceJwtApi';
+	displayName = 'Salesforce JWT API';
+	documentationUrl = 'salesforce';
+	properties = [
+		{
+			displayName: 'Environment Type',
+			name: 'environment',
+			type: 'options' as NodePropertyTypes,
+			options: [
+				{
+					name: 'Production',
+					value: 'production',
+				},
+				{
+					name: 'Sandbox',
+					value: 'sandbox',
+				},
+			],
+			default: 'production',
+		},
+		{
+			displayName: 'Client ID',
+			name: 'clientId',
+			type: 'string' as NodePropertyTypes,
+			default: '',
+			required: true,
+			description: 'Consumer Key from Salesforce Connected App.',
+		},
+		{
+			displayName: 'Username',
+			name: 'username',
+			type: 'string' as NodePropertyTypes,
+			default: '',
+			required: true,
+		},
+		{
+			displayName: 'Private Key',
+			name: 'privateKey',
+			type: 'string' as NodePropertyTypes,
+			typeOptions: {
+				password: true,
+			},
+			default: '',
+			required: true,
+			description: 'Use the multiline editor.  Make sure it is in standard PEM key format:<br />-----BEGIN PRIVATE KEY-----<br />KEY DATA GOES HERE<br />-----END PRIVATE KEY-----',
+		},
+	];
+}