refactor: Setup typescript project references across workflow, core, and cli (#4519)

* refactor: use consistent folder structure across workflow, core, and cli

* setup typescript project references across workflow, core, and cli

packages/cli/src/config/index.ts

@@ -0,0 +1,28 @@
+/* eslint-disable @typescript-eslint/unbound-method */
+/* eslint-disable no-console */
+import convict from 'convict';
+import dotenv from 'dotenv';
+import { schema } from './schema';
+
+dotenv.config();
+
+const config = convict(schema);
+
+config.getEnv = config.get;
+
+// Overwrite default configuration with settings which got defined in
+// optional configuration files
+if (process.env.N8N_CONFIG_FILES !== undefined) {
+	const configFiles = process.env.N8N_CONFIG_FILES.split(',');
+	if (process.env.NODE_ENV !== 'test') {
+		console.log(`\nLoading configuration overwrites from:\n - ${configFiles.join('\n - ')}\n`);
+	}
+
+	config.loadFile(configFiles);
+}
+
+config.validate({
+	allowed: 'strict',
+});
+
+export = config;