feat(core): Add Tournament as the new default expression evaluator (#6964)

Github issue / Community forum post (link here to close automatically):

---------

Co-authored-by: Omar Ajoue <krynble@gmail.com>
Co-authored-by: कारतोफ्फेलस्क्रिप्ट™ <aditya@netroy.in>

packages/cli/src/config/schema.ts

@@ -1199,6 +1199,21 @@ export const schema = {
 		},
 	},
 
+	expression: {
+		evaluator: {
+			doc: 'Expression evaluator to use',
+			format: ['tmpl', 'tournament'] as const,
+			default: 'tournament',
+			env: 'N8N_EXPRESSION_EVALUATOR',
+		},
+		reportDifference: {
+			doc: 'Whether to report differences in the evaluator outputs',
+			format: Boolean,
+			default: false,
+			env: 'N8N_EXPRESSION_REPORT_DIFFERENCE',
+		},
+	},
+
 	sourceControl: {
 		defaultKeyPairType: {
 			doc: 'Default SSH key type to use when generating SSH keys',